echobot: print invite link with python

Fix issues with echobot invite link in cmdeploy
The entire stack is setup to support 'localhost' as a value for ssh_host, returning LocalExec when that is the case, but this last step made a new explicit SSHExec connection to config.mail_domain. This changes that to simply use the subprocess module when ssh_host is local. This also fixes the issue where the connection was made to 'config.mail_domain' instead of the supplied ssh_host value, ensuring that remains consistent. Additionally, the entire process will be skipped if --dry-run is used with cmdeploy, allowing a dry-run to complete without error.
2026-05-10 16:04:37 +00:00 · 2025-12-06 19:08:09 +01:00 · 2025-12-06 19:08:09 +01:00 · 2025-12-04 12:23:27 +01:00 · 2025-11-25 22:26:47 +01:00 · 2025-11-21 10:02:44 +01:00
28 changed files with 1603 additions and 1105 deletions
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,18 @@

 ## untagged

+- Add robots.txt to exclude all web crawlers
+  ([#732](https://github.com/chatmail/relay/pull/732))
+
+- acmetool: accept new Let's Encrypt ToS: https://letsencrypt.org/documents/LE-SA-v1.6-August-18-2025.pdf
+  ([#729](https://github.com/chatmail/relay/pull/729))
+
+- Organized cmdeploy into install, configure, and activate stages
+  ([#695](https://github.com/chatmail/relay/pull/695))
+
+- echobot: print invite-link also if it's deployed locally
+  ([#751](https://github.com/chatmail/relay/pull/751))
+
 - docs: move readme.md docs to sphinx documentation rendered at https://chatmail.at/doc/relay 
  ([#711](https://github.com/chatmail/relay/pull/711))

@@ -18,10 +30,10 @@
  ([#689](https://github.com/chatmail/relay/pull/689))

 - Require TLS 1.2 for outgoing SMTP connections
-  ([#685](https://github.com/chatmail/relay/pull/685))
+  ([#685](https://github.com/chatmail/relay/pull/685), [#730](https://github.com/chatmail/relay/pull/730))

 - require STARTTLS for incoming port 25 connections
-  ([#684](https://github.com/chatmail/relay/pull/684))
+  ([#684](https://github.com/chatmail/relay/pull/684), [#730](https://github.com/chatmail/relay/pull/730))

 - filtermail: run CPU-intensive handle_DATA in a thread pool executor
  ([#676](https://github.com/chatmail/relay/pull/676))
--- a/cmdeploy/src/cmdeploy/init.py
+++ b/cmdeploy/src/cmdeploy/init.py
@@ -1,941 +0,0 @@
-"""
-Chat Mail pyinfra deploy.
-"""
-
-import importlib.resources
-import io
-import shutil
-import subprocess
-import sys
-from io import StringIO
-from pathlib import Path
-
-from chatmaild.config import Config, read_config
-from pyinfra import facts, host, logger
-from pyinfra.api import FactBase
-from pyinfra.facts.files import File, Sha256File
-from pyinfra.facts.server import Sysctl
-from pyinfra.facts.systemd import SystemdEnabled
-from pyinfra.operations import apt, files, pip, server, systemd
-
-from .acmetool import deploy_acmetool
-
-
-class Port(FactBase):
-    """
-    Returns the process occuping a port.
-    """
-
-    def command(self, port: int) -> str:
-        return (
-            "ss -lptn 'src :%d' | awk 'NR>1 {print $6,$7}' | sed 's/users:((\"//;s/\".*//'"
-            % (port,)
-        )
-
-    def process(self, output: [str]) -> str:
-        return output[0]
-
-
-def _build_chatmaild(dist_dir) -> None:
-    dist_dir = Path(dist_dir).resolve()
-    if dist_dir.exists():
-        shutil.rmtree(dist_dir)
-    dist_dir.mkdir()
-    subprocess.check_output(
-        [sys.executable, "-m", "build", "-n"]
-        + ["--sdist", "chatmaild", "--outdir", str(dist_dir)]
-    )
-    entries = list(dist_dir.iterdir())
-    assert len(entries) == 1
-    return entries[0]
-
-
-def remove_legacy_artifacts():
-    # disable legacy doveauth-dictproxy.service
-    if host.get_fact(SystemdEnabled).get("doveauth-dictproxy.service"):
-        systemd.service(
-            name="Disable legacy doveauth-dictproxy.service",
-            service="doveauth-dictproxy.service",
-            running=False,
-            enabled=False,
-        )
-
-
-def _install_remote_venv_with_chatmaild(config) -> None:
-    remove_legacy_artifacts()
-    dist_file = _build_chatmaild(dist_dir=Path("chatmaild/dist"))
-    remote_base_dir = "/usr/local/lib/chatmaild"
-    remote_dist_file = f"{remote_base_dir}/dist/{dist_file.name}"
-    remote_venv_dir = f"{remote_base_dir}/venv"
-    remote_chatmail_inipath = f"{remote_base_dir}/chatmail.ini"
-    root_owned = dict(user="root", group="root", mode="644")
-
-    apt.packages(
-        name="apt install python3-virtualenv",
-        packages=["python3-virtualenv"],
-    )
-
-    files.put(
-        name="Upload chatmaild source package",
-        src=dist_file.open("rb"),
-        dest=remote_dist_file,
-        create_remote_dir=True,
-        **root_owned,
-    )
-
-    files.put(
-        name=f"Upload {remote_chatmail_inipath}",
-        src=config._getbytefile(),
-        dest=remote_chatmail_inipath,
-        **root_owned,
-    )
-
-    pip.virtualenv(
-        name=f"chatmaild virtualenv {remote_venv_dir}",
-        path=remote_venv_dir,
-        always_copy=True,
-    )
-
-    apt.packages(
-        name="install gcc and headers to build crypt_r source package",
-        packages=["gcc", "python3-dev"],
-    )
-
-    server.shell(
-        name=f"forced pip-install {dist_file.name}",
-        commands=[
-            f"{remote_venv_dir}/bin/pip install --force-reinstall {remote_dist_file}"
-        ],
-    )
-
-    files.template(
-        src=importlib.resources.files(__package__).joinpath("metrics.cron.j2"),
-        dest="/etc/cron.d/chatmail-metrics",
-        user="root",
-        group="root",
-        mode="644",
-        config={
-            "mailboxes_dir": config.mailboxes_dir,
-            "execpath": f"{remote_venv_dir}/bin/chatmail-metrics",
-        },
-    )
-
-    # install systemd units
-    for fn in (
-        "doveauth",
-        "filtermail",
-        "filtermail-incoming",
-        "echobot",
-        "chatmail-metadata",
-        "lastlogin",
-        "turnserver",
-        "chatmail-expire",
-        "chatmail-expire.timer",
-        "chatmail-fsreport",
-        "chatmail-fsreport.timer",
-    ):
-        execpath = fn if fn != "filtermail-incoming" else "filtermail"
-        params = dict(
-            execpath=f"{remote_venv_dir}/bin/{execpath}",
-            config_path=remote_chatmail_inipath,
-            remote_venv_dir=remote_venv_dir,
-            mail_domain=config.mail_domain,
-        )
-
-        basename = fn if "." in fn else f"{fn}.service"
-
-        source_path = importlib.resources.files(__package__).joinpath("service", f"{basename}.f")
-        content = source_path.read_text().format(**params).encode()
-
-        files.put(
-            name=f"Upload {basename}",
-            src=io.BytesIO(content),
-            dest=f"/etc/systemd/system/{basename}",
-            **root_owned,
-        )
-        if fn == "chatmail-expire" or fn == "chatmail-fsreport":
-            # don't auto-start but let the corresponding timer trigger execution
-            enabled = False
-        else:
-            enabled = True
-        systemd.service(
-            name=f"Setup {basename}",
-            service=basename,
-            running=enabled,
-            enabled=enabled,
-            restarted=enabled,
-            daemon_reload=True,
-        )
-
-
-
-def _configure_opendkim(domain: str, dkim_selector: str = "dkim") -> bool:
-    """Configures OpenDKIM"""
-    need_restart = False
-
-    main_config = files.template(
-        src=importlib.resources.files(__package__).joinpath("opendkim/opendkim.conf"),
-        dest="/etc/opendkim.conf",
-        user="root",
-        group="root",
-        mode="644",
-        config={"domain_name": domain, "opendkim_selector": dkim_selector},
-    )
-    need_restart |= main_config.changed
-
-    screen_script = files.put(
-        src=importlib.resources.files(__package__).joinpath("opendkim/screen.lua"),
-        dest="/etc/opendkim/screen.lua",
-        user="root",
-        group="root",
-        mode="644",
-    )
-    need_restart |= screen_script.changed
-
-    final_script = files.put(
-        src=importlib.resources.files(__package__).joinpath("opendkim/final.lua"),
-        dest="/etc/opendkim/final.lua",
-        user="root",
-        group="root",
-        mode="644",
-    )
-    need_restart |= final_script.changed
-
-    files.directory(
-        name="Add opendkim directory to /etc",
-        path="/etc/opendkim",
-        user="opendkim",
-        group="opendkim",
-        mode="750",
-        present=True,
-    )
-
-    keytable = files.template(
-        src=importlib.resources.files(__package__).joinpath("opendkim/KeyTable"),
-        dest="/etc/dkimkeys/KeyTable",
-        user="opendkim",
-        group="opendkim",
-        mode="644",
-        config={"domain_name": domain, "opendkim_selector": dkim_selector},
-    )
-    need_restart |= keytable.changed
-
-    signing_table = files.template(
-        src=importlib.resources.files(__package__).joinpath("opendkim/SigningTable"),
-        dest="/etc/dkimkeys/SigningTable",
-        user="opendkim",
-        group="opendkim",
-        mode="644",
-        config={"domain_name": domain, "opendkim_selector": dkim_selector},
-    )
-    need_restart |= signing_table.changed
-    files.directory(
-        name="Add opendkim socket directory to /var/spool/postfix",
-        path="/var/spool/postfix/opendkim",
-        user="opendkim",
-        group="opendkim",
-        mode="750",
-        present=True,
-    )
-
-    apt.packages(
-        name="apt install opendkim opendkim-tools",
-        packages=["opendkim", "opendkim-tools"],
-    )
-
-    if not host.get_fact(File, f"/etc/dkimkeys/{dkim_selector}.private"):
-        server.shell(
-            name="Generate OpenDKIM domain keys",
-            commands=[
-                f"/usr/sbin/opendkim-genkey -D /etc/dkimkeys -d {domain} -s {dkim_selector}"
-            ],
-            _use_su_login=True,
-            _su_user="opendkim",
-        )
-
-    service_file = files.put(
-        name="Configure opendkim to restart once a day",
-        src=importlib.resources.files(__package__).joinpath("opendkim/systemd.conf"),
-        dest="/etc/systemd/system/opendkim.service.d/10-prevent-memory-leak.conf",
-    )
-    need_restart |= service_file.changed
-
-    return need_restart
-
-
-def _uninstall_mta_sts_daemon() -> None:
-    # Remove configuration.
-    files.file("/etc/mta-sts-daemon.yml", present=False)
-
-    files.directory("/usr/local/lib/postfix-mta-sts-resolver", present=False)
-
-    files.file("/etc/systemd/system/mta-sts-daemon.service", present=False)
-
-    systemd.service(
-        name="Stop MTA-STS daemon",
-        service="mta-sts-daemon.service",
-        daemon_reload=True,
-        running=False,
-        enabled=False,
-    )
-
-
-def _configure_postfix(config: Config, debug: bool = False) -> bool:
-    """Configures Postfix SMTP server."""
-    need_restart = False
-
-    main_config = files.template(
-        src=importlib.resources.files(__package__).joinpath("postfix/main.cf.j2"),
-        dest="/etc/postfix/main.cf",
-        user="root",
-        group="root",
-        mode="644",
-        config=config,
-        disable_ipv6=config.disable_ipv6,
-    )
-    need_restart |= main_config.changed
-
-    master_config = files.template(
-        src=importlib.resources.files(__package__).joinpath("postfix/master.cf.j2"),
-        dest="/etc/postfix/master.cf",
-        user="root",
-        group="root",
-        mode="644",
-        debug=debug,
-        config=config,
-    )
-    need_restart |= master_config.changed
-
-    header_cleanup = files.put(
-        src=importlib.resources.files(__package__).joinpath(
-            "postfix/submission_header_cleanup"
-        ),
-        dest="/etc/postfix/submission_header_cleanup",
-        user="root",
-        group="root",
-        mode="644",
-    )
-    need_restart |= header_cleanup.changed
-
-    # Login map that 1:1 maps email address to login.
-    login_map = files.put(
-        src=importlib.resources.files(__package__).joinpath("postfix/login_map"),
-        dest="/etc/postfix/login_map",
-        user="root",
-        group="root",
-        mode="644",
-    )
-    need_restart |= login_map.changed
-
-    return need_restart
-
-
-def _install_dovecot_package(package: str, arch: str):
-    arch = "amd64" if arch == "x86_64" else arch
-    arch = "arm64" if arch == "aarch64" else arch
-    url = f"https://download.delta.chat/dovecot/dovecot-{package}_2.3.21%2Bdfsg1-3_{arch}.deb"
-    deb_filename = "/root/" + url.split("/")[-1]
-
-    match (package, arch):
-        case ("core", "amd64"):
-            sha256 = "dd060706f52a306fa863d874717210b9fe10536c824afe1790eec247ded5b27d"
-        case ("core", "arm64"):
-            sha256 = "e7548e8a82929722e973629ecc40fcfa886894cef3db88f23535149e7f730dc9"
-        case ("imapd", "amd64"):
-            sha256 = "8d8dc6fc00bbb6cdb25d345844f41ce2f1c53f764b79a838eb2a03103eebfa86"
-        case ("imapd", "arm64"):
-            sha256 = "178fa877ddd5df9930e8308b518f4b07df10e759050725f8217a0c1fb3fd707f"
-        case ("lmtpd", "amd64"):
-            sha256 = "2f69ba5e35363de50962d42cccbfe4ed8495265044e244007d7ccddad77513ab"
-        case ("lmtpd", "arm64"):
-            sha256 = "89f52fb36524f5877a177dff4a713ba771fd3f91f22ed0af7238d495e143b38f"
-        case _:
-            apt.packages(packages=[f"dovecot-{package}"])
-            return
-
-    files.download(
-        name=f"Download dovecot-{package}",
-        src=url,
-        dest=deb_filename,
-        sha256sum=sha256,
-        cache_time=60 * 60 * 24 * 365 * 10,  # never redownload the package
-    )
-
-    apt.deb(name=f"Install dovecot-{package}", src=deb_filename)
-
-
-def _configure_dovecot(config: Config, debug: bool = False) -> bool:
-    """Configures Dovecot IMAP server."""
-    need_restart = False
-
-    main_config = files.template(
-        src=importlib.resources.files(__package__).joinpath("dovecot/dovecot.conf.j2"),
-        dest="/etc/dovecot/dovecot.conf",
-        user="root",
-        group="root",
-        mode="644",
-        config=config,
-        debug=debug,
-        disable_ipv6=config.disable_ipv6,
-    )
-    need_restart |= main_config.changed
-    auth_config = files.put(
-        src=importlib.resources.files(__package__).joinpath("dovecot/auth.conf"),
-        dest="/etc/dovecot/auth.conf",
-        user="root",
-        group="root",
-        mode="644",
-    )
-    need_restart |= auth_config.changed
-    lua_push_notification_script = files.put(
-        src=importlib.resources.files(__package__).joinpath(
-            "dovecot/push_notification.lua"
-        ),
-        dest="/etc/dovecot/push_notification.lua",
-        user="root",
-        group="root",
-        mode="644",
-    )
-    need_restart |= lua_push_notification_script.changed
-
-    # remove historic expunge script
-    # which is now implemented through a systemd chatmail-expire service/timer
-    files.file(
-        path="/etc/cron.d/expunge",
-        present=False,
-    )
-
-    # as per https://doc.dovecot.org/configuration_manual/os/
-    # it is recommended to set the following inotify limits
-    for name in ("max_user_instances", "max_user_watches"):
-        key = f"fs.inotify.{name}"
-        if host.get_fact(Sysctl)[key] > 65535:
-            # Skip updating limits if already sufficient
-            # (enables running in incus containers where sysctl readonly)
-            continue
-        server.sysctl(
-            name=f"Change {key}",
-            key=key,
-            value=65535,
-            persist=True,
-        )
-
-    timezone_env = files.line(
-        name="Set TZ environment variable",
-        path="/etc/environment",
-        line="TZ=:/etc/localtime",
-    )
-    need_restart |= timezone_env.changed
-
-    return need_restart
-
-
-def _configure_nginx(config: Config, debug: bool = False) -> bool:
-    """Configures nginx HTTP server."""
-    need_restart = False
-
-    main_config = files.template(
-        src=importlib.resources.files(__package__).joinpath("nginx/nginx.conf.j2"),
-        dest="/etc/nginx/nginx.conf",
-        user="root",
-        group="root",
-        mode="644",
-        config={"domain_name": config.mail_domain},
-        disable_ipv6=config.disable_ipv6,
-    )
-    need_restart |= main_config.changed
-
-    autoconfig = files.template(
-        src=importlib.resources.files(__package__).joinpath("nginx/autoconfig.xml.j2"),
-        dest="/var/www/html/.well-known/autoconfig/mail/config-v1.1.xml",
-        user="root",
-        group="root",
-        mode="644",
-        config={"domain_name": config.mail_domain},
-    )
-    need_restart |= autoconfig.changed
-
-    mta_sts_config = files.template(
-        src=importlib.resources.files(__package__).joinpath("nginx/mta-sts.txt.j2"),
-        dest="/var/www/html/.well-known/mta-sts.txt",
-        user="root",
-        group="root",
-        mode="644",
-        config={"domain_name": config.mail_domain},
-    )
-    need_restart |= mta_sts_config.changed
-
-    # install CGI newemail script
-    #
-    cgi_dir = "/usr/lib/cgi-bin"
-    files.directory(
-        name=f"Ensure {cgi_dir} exists",
-        path=cgi_dir,
-        user="root",
-        group="root",
-    )
-
-    files.put(
-        name="Upload cgi newemail.py script",
-        src=importlib.resources.files("chatmaild").joinpath("newemail.py").open("rb"),
-        dest=f"{cgi_dir}/newemail.py",
-        user="root",
-        group="root",
-        mode="755",
-    )
-
-    return need_restart
-
-
-def _remove_rspamd() -> None:
-    """Remove rspamd"""
-    apt.packages(name="Remove rspamd", packages="rspamd", present=False)
-
-
-def check_config(config):
-    mail_domain = config.mail_domain
-    if mail_domain != "testrun.org" and not mail_domain.endswith(".testrun.org"):
-        blocked_words = "merlinux schmieder testrun.org".split()
-        for key in config.__dict__:
-            value = config.__dict__[key]
-            if key.startswith("privacy") and any(
-                x in str(value) for x in blocked_words
-            ):
-                raise ValueError(
-                    f"please set your own privacy contacts/addresses in {config._inipath}"
-                )
-    return config
-
-
-def deploy_turn_server(config):
-    (url, sha256sum) = {
-        "x86_64": (
-            "https://github.com/chatmail/chatmail-turn/releases/download/v0.3/chatmail-turn-x86_64-linux",
-            "841e527c15fdc2940b0469e206188ea8f0af48533be12ecb8098520f813d41e4",
-        ),
-        "aarch64": (
-            "https://github.com/chatmail/chatmail-turn/releases/download/v0.3/chatmail-turn-aarch64-linux",
-            "a5fc2d06d937b56a34e098d2cd72a82d3e89967518d159bf246dc69b65e81b42",
-        ),
-    }[host.get_fact(facts.server.Arch)]
-
-    need_restart = False
-
-    existing_sha256sum = host.get_fact(Sha256File, "/usr/local/bin/chatmail-turn")
-    if existing_sha256sum != sha256sum:
-        server.shell(
-            name="Download chatmail-turn",
-            commands=[
-                f"(curl -L {url} >/usr/local/bin/chatmail-turn.new && (echo '{sha256sum} /usr/local/bin/chatmail-turn.new' | sha256sum -c) && mv /usr/local/bin/chatmail-turn.new /usr/local/bin/chatmail-turn)",
-                "chmod 755 /usr/local/bin/chatmail-turn",
-            ],
-        )
-        need_restart = True
-
-    source_path = importlib.resources.files(__package__).joinpath(
-        "service", "turnserver.service.f"
-    )
-    content = source_path.read_text().format(mail_domain=config.mail_domain).encode()
-
-    systemd_unit = files.put(
-        name="Upload turnserver.service",
-        src=io.BytesIO(content),
-        dest="/etc/systemd/system/turnserver.service",
-        user="root",
-        group="root",
-        mode="644",
-    )
-    need_restart |= systemd_unit.changed
-
-    systemd.service(
-        name="Setup turnserver service",
-        service="turnserver.service",
-        running=True,
-        enabled=True,
-        restarted=need_restart,
-        daemon_reload=systemd_unit.changed,
-    )
-
-
-def deploy_mtail(config):
-    # Uninstall mtail package, we are going to install a static binary.
-    apt.packages(name="Uninstall mtail", packages=["mtail"], present=False)
-
-    (url, sha256sum) = {
-        "x86_64": (
-            "https://github.com/google/mtail/releases/download/v3.0.8/mtail_3.0.8_linux_amd64.tar.gz",
-            "123c2ee5f48c3eff12ebccee38befd2233d715da736000ccde49e3d5607724e4",
-        ),
-        "aarch64": (
-            "https://github.com/google/mtail/releases/download/v3.0.8/mtail_3.0.8_linux_arm64.tar.gz",
-            "aa04811c0929b6754408676de520e050c45dddeb3401881888a092c9aea89cae",
-        ),
-    }[host.get_fact(facts.server.Arch)]
-
-    server.shell(
-        name="Download mtail",
-        commands=[
-            f"(echo '{sha256sum} /usr/local/bin/mtail' | sha256sum -c) || (curl -L {url} | gunzip | tar -x -f - mtail -O >/usr/local/bin/mtail.new && mv /usr/local/bin/mtail.new /usr/local/bin/mtail)",
-            "chmod 755 /usr/local/bin/mtail",
-        ],
-    )
-
-    # Using our own systemd unit instead of `/usr/lib/systemd/system/mtail.service`.
-    # This allows to read from journalctl instead of log files.
-    files.template(
-        src=importlib.resources.files(__package__).joinpath("mtail/mtail.service.j2"),
-        dest="/etc/systemd/system/mtail.service",
-        user="root",
-        group="root",
-        mode="644",
-        address=config.mtail_address or "127.0.0.1",
-        port=3903,
-    )
-
-    mtail_conf = files.put(
-        name="Mtail configuration",
-        src=importlib.resources.files(__package__).joinpath(
-            "mtail/delivered_mail.mtail"
-        ),
-        dest="/etc/mtail/delivered_mail.mtail",
-        user="root",
-        group="root",
-        mode="644",
-    )
-
-    systemd.service(
-        name="Start and enable mtail",
-        service="mtail.service",
-        running=bool(config.mtail_address),
-        enabled=bool(config.mtail_address),
-        restarted=mtail_conf.changed,
-    )
-
-
-def deploy_iroh_relay(config) -> None:
-    (url, sha256sum) = {
-        "x86_64": (
-            "https://github.com/n0-computer/iroh/releases/download/v0.35.0/iroh-relay-v0.35.0-x86_64-unknown-linux-musl.tar.gz",
-            "45c81199dbd70f8c4c30fef7f3b9727ca6e3cea8f2831333eeaf8aa71bf0fac1",
-        ),
-        "aarch64": (
-            "https://github.com/n0-computer/iroh/releases/download/v0.35.0/iroh-relay-v0.35.0-aarch64-unknown-linux-musl.tar.gz",
-            "f8ef27631fac213b3ef668d02acd5b3e215292746a3fc71d90c63115446008b1",
-        ),
-    }[host.get_fact(facts.server.Arch)]
-
-    apt.packages(
-        name="Install curl",
-        packages=["curl"],
-    )
-
-    need_restart = False
-
-    existing_sha256sum = host.get_fact(Sha256File, "/usr/local/bin/iroh-relay")
-    if existing_sha256sum != sha256sum:
-        server.shell(
-            name="Download iroh-relay",
-            commands=[
-                f"(curl -L {url} | gunzip | tar -x -f - ./iroh-relay -O >/usr/local/bin/iroh-relay.new && (echo '{sha256sum} /usr/local/bin/iroh-relay.new' | sha256sum -c) && mv /usr/local/bin/iroh-relay.new /usr/local/bin/iroh-relay)",
-                "chmod 755 /usr/local/bin/iroh-relay",
-            ],
-        )
-        need_restart = True
-
-    systemd_unit = files.put(
-        name="Upload iroh-relay systemd unit",
-        src=importlib.resources.files(__package__).joinpath("iroh-relay.service"),
-        dest="/etc/systemd/system/iroh-relay.service",
-        user="root",
-        group="root",
-        mode="644",
-    )
-    need_restart |= systemd_unit.changed
-
-    iroh_config = files.put(
-        name="Upload iroh-relay config",
-        src=importlib.resources.files(__package__).joinpath("iroh-relay.toml"),
-        dest="/etc/iroh-relay.toml",
-        user="root",
-        group="root",
-        mode="644",
-    )
-    need_restart |= iroh_config.changed
-
-    systemd.service(
-        name="Start and enable iroh-relay",
-        service="iroh-relay.service",
-        running=True,
-        enabled=config.enable_iroh_relay,
-        restarted=need_restart,
-    )
-
-
-def deploy_chatmail(config_path: Path, disable_mail: bool) -> None:
-    """Deploy a chat-mail instance.
-
-    :param config_path: path to chatmail.ini
-    :param disable_mail: whether to disable postfix & dovecot
-    """
-    config = read_config(config_path)
-    check_config(config)
-    mail_domain = config.mail_domain
-
-    from .www import build_webpages, find_merge_conflict, get_paths
-
-    server.group(name="Create vmail group", group="vmail", system=True)
-    server.user(name="Create vmail user", user="vmail", group="vmail", system=True)
-    server.group(name="Create opendkim group", group="opendkim", system=True)
-    server.user(
-        name="Create opendkim user",
-        user="opendkim",
-        groups=["opendkim"],
-        system=True,
-    )
-    server.user(
-        name="Add postfix user to opendkim group for socket access",
-        user="postfix",
-        groups=["opendkim"],
-        system=True,
-    )
-    server.user(name="Create echobot user", user="echobot", system=True)
-    server.user(name="Create iroh user", user="iroh", system=True)
-
-    # Add our OBS repository for dovecot_no_delay
-    files.put(
-        name="Add Deltachat OBS GPG key to apt keyring",
-        src=importlib.resources.files(__package__).joinpath("obs-home-deltachat.gpg"),
-        dest="/etc/apt/keyrings/obs-home-deltachat.gpg",
-        user="root",
-        group="root",
-        mode="644",
-    )
-
-    files.line(
-        name="Add DeltaChat OBS home repository to sources.list",
-        path="/etc/apt/sources.list",
-        line="deb [signed-by=/etc/apt/keyrings/obs-home-deltachat.gpg] https://download.opensuse.org/repositories/home:/deltachat/Debian_12/ ./",
-        escape_regex_characters=True,
-        present=False,
-    )
-
-    if host.get_fact(Port, port=53) != "unbound":
-        files.line(
-            name="Add 9.9.9.9 to resolv.conf",
-            path="/etc/resolv.conf",
-            line="nameserver 9.9.9.9",
-        )
-    apt.update(name="apt update", cache_time=24 * 3600)
-    apt.upgrade(name="upgrade apt packages", auto_remove=True)
-
-    apt.packages(
-        name="Install rsync",
-        packages=["rsync"],
-    )
-
-    deploy_turn_server(config)
-
-    # Run local DNS resolver `unbound`.
-    # `resolvconf` takes care of setting up /etc/resolv.conf
-    # to use 127.0.0.1 as the resolver.
-    from cmdeploy.cmdeploy import Out
-
-    port_services = [
-        (["master", "smtpd"], 25),
-        ("unbound", 53),
-        ("acmetool", 80),
-        (["imap-login", "dovecot"], 143),
-        ("nginx", 443),
-        (["master", "smtpd"], 465),
-        (["master", "smtpd"], 587),
-        (["imap-login", "dovecot"], 993),
-        ("iroh-relay", 3340),
-        ("nginx", 8443),
-        (["master", "smtpd"], config.postfix_reinject_port),
-        (["master", "smtpd"], config.postfix_reinject_port_incoming),
-        ("filtermail", config.filtermail_smtp_port),
-        ("filtermail", config.filtermail_smtp_port_incoming),
-    ]
-    for service, port in port_services:
-        print(f"Checking if port {port} is available for {service}...")
-        running_service = host.get_fact(Port, port=port)
-        if running_service:
-            if running_service not in service:
-                Out().red(
-                    f"Deploy failed: port {port} is occupied by: {running_service}"
-                )
-                exit(1)
-
-    apt.packages(
-        name="Install unbound",
-        packages=["unbound", "unbound-anchor", "dnsutils"],
-    )
-    server.shell(
-        name="Generate root keys for validating DNSSEC",
-        commands=[
-            "unbound-anchor -a /var/lib/unbound/root.key || true",
-            "systemctl reset-failed unbound.service",
-        ],
-    )
-    systemd.service(
-        name="Start and enable unbound",
-        service="unbound.service",
-        running=True,
-        enabled=True,
-    )
-
-    deploy_iroh_relay(config)
-
-    # Deploy acmetool to have TLS certificates.
-    tls_domains = [mail_domain, f"mta-sts.{mail_domain}", f"www.{mail_domain}"]
-    deploy_acmetool(
-        email=config.acme_email,
-        domains=tls_domains,
-    )
-
-    apt.packages(
-        # required for setfacl for echobot
-        name="Install acl",
-        packages="acl",
-    )
-
-    apt.packages(
-        name="Install Postfix",
-        packages="postfix",
-    )
-
-    if not "dovecot.service" in host.get_fact(SystemdEnabled):
-        _install_dovecot_package("core", host.get_fact(facts.server.Arch))
-        _install_dovecot_package("imapd", host.get_fact(facts.server.Arch))
-        _install_dovecot_package("lmtpd", host.get_fact(facts.server.Arch))
-
-    apt.packages(
-        name="Install nginx",
-        packages=["nginx", "libnginx-mod-stream"],
-    )
-
-    apt.packages(
-        name="Install fcgiwrap",
-        packages=["fcgiwrap"],
-    )
-
-    www_path, src_dir, build_dir = get_paths(config)
-    # if www_folder was set to a non-existing folder, skip upload
-    if not www_path.is_dir():
-        logger.warning("Building web pages is disabled in chatmail.ini, skipping")
-    elif (path := find_merge_conflict(src_dir)) is not None:
-        logger.warning(f"Merge conflict found in {path}, skipping website deployment. Fix merge conflict if you want to upload your web page.")
-    else:
-        # if www_folder is a hugo page, build it
-        if build_dir:
-            www_path = build_webpages(src_dir, build_dir, config)
-        # if it is not a hugo page, upload it as is
-        files.rsync(f"{www_path}/", "/var/www/html", flags=["-avz", "--chown=www-data"])
-
-    _install_remote_venv_with_chatmaild(config)
-    debug = False
-    dovecot_need_restart = _configure_dovecot(config, debug=debug)
-    postfix_need_restart = _configure_postfix(config, debug=debug)
-    nginx_need_restart = _configure_nginx(config)
-    _uninstall_mta_sts_daemon()
-
-    _remove_rspamd()
-    opendkim_need_restart = _configure_opendkim(mail_domain, "opendkim")
-
-    systemd.service(
-        name="Start and enable OpenDKIM",
-        service="opendkim.service",
-        running=True,
-        enabled=True,
-        daemon_reload=opendkim_need_restart,
-        restarted=opendkim_need_restart,
-    )
-
-    # Dovecot should be started before Postfix
-    # because it creates authentication socket
-    # required by Postfix.
-    systemd.service(
-        name="disable dovecot for now" if disable_mail else "Start and enable Dovecot",
-        service="dovecot.service",
-        running=False if disable_mail else True,
-        enabled=False if disable_mail else True,
-        restarted=dovecot_need_restart if not disable_mail else False,
-    )
-
-    systemd.service(
-        name="disable postfix for now" if disable_mail else "Start and enable Postfix",
-        service="postfix.service",
-        running=False if disable_mail else True,
-        enabled=False if disable_mail else True,
-        restarted=postfix_need_restart if not disable_mail else False,
-    )
-
-    systemd.service(
-        name="Start and enable nginx",
-        service="nginx.service",
-        running=True,
-        enabled=True,
-        restarted=nginx_need_restart,
-    )
-
-    systemd.service(
-        name="Start and enable fcgiwrap",
-        service="fcgiwrap.service",
-        running=True,
-        enabled=True,
-    )
-
-    systemd.service(
-        name="Restart echobot if postfix and dovecot were just started",
-        service="echobot.service",
-        restarted=postfix_need_restart and dovecot_need_restart,
-    )
-
-    # This file is used by auth proxy.
-    # https://wiki.debian.org/EtcMailName
-    server.shell(
-        name="Setup /etc/mailname",
-        commands=[f"echo {mail_domain} >/etc/mailname; chmod 644 /etc/mailname"],
-    )
-
-    journald_conf = files.put(
-        name="Configure journald",
-        src=importlib.resources.files(__package__).joinpath("journald.conf"),
-        dest="/etc/systemd/journald.conf",
-        user="root",
-        group="root",
-        mode="644",
-    )
-    systemd.service(
-        name="Start and enable journald",
-        service="systemd-journald.service",
-        running=True,
-        enabled=True,
-        restarted=journald_conf.changed,
-    )
-    files.directory(
-        name="Ensure old logs on disk are deleted",
-        path="/var/log/journal/",
-        present=False,
-    )
-
-    apt.packages(
-        name="Ensure cron is installed",
-        packages=["cron"],
-    )
-    try:
-        git_hash = subprocess.check_output(["git", "rev-parse", "HEAD"]).decode()
-    except Exception:
-        git_hash = "unknown\n"
-    try:
-        git_diff = subprocess.check_output(["git", "diff"]).decode()
-    except Exception:
-        git_diff = ""
-    files.put(
-        name="Upload chatmail relay git commiit hash",
-        src=StringIO(git_hash + git_diff),
-        dest="/etc/chatmail-version",
-        mode="700",
-    )
-
-    deploy_mtail(config)
--- a/cmdeploy/src/cmdeploy/acmetool/init.py
+++ b/cmdeploy/src/cmdeploy/acmetool/init.py
@@ -2,104 +2,127 @@ import importlib.resources

 from pyinfra.operations import apt, files, server, systemd

+from ..basedeploy import Deployer

-def deploy_acmetool(email="", domains=[]):
-    """Deploy acmetool."""
-    apt.packages(
-        name="Install acmetool",
-        packages=["acmetool"],
-    )

-    files.file(
-        name="Remove old acmetool cronjob, it is replaced with systemd timer.",
-        path="/etc/cron.d/acmetool",
-        present=False,
-    )
+class AcmetoolDeployer(Deployer):
+    def __init__(self, email, domains):
+        self.domains = domains
+        self.email = email
+        self.need_restart_redirector = False
+        self.need_restart_reconcile_service = False
+        self.need_restart_reconcile_timer = False

-    files.put(
-        name="Install acmetool hook.",
-        src=importlib.resources.files(__package__).joinpath("acmetool.hook").open("rb"),
-        dest="/etc/acme/hooks/nginx",
-        user="root",
-        group="root",
-        mode="755",
-    )
-    files.file(
-        name="Remove acmetool hook from the wrong location where it was previously installed.",
-        path="/usr/lib/acme/hooks/nginx",
-        present=False,
-    )
+    def install(self):
+        apt.packages(
+            name="Install acmetool",
+            packages=["acmetool"],
+        )

-    files.template(
-        src=importlib.resources.files(__package__).joinpath("response-file.yaml.j2"),
-        dest="/var/lib/acme/conf/responses",
-        user="root",
-        group="root",
-        mode="644",
-        email=email,
-    )
+        files.file(
+            name="Remove old acmetool cronjob, it is replaced with systemd timer.",
+            path="/etc/cron.d/acmetool",
+            present=False,
+        )

-    files.template(
-        src=importlib.resources.files(__package__).joinpath("target.yaml.j2"),
-        dest="/var/lib/acme/conf/target",
-        user="root",
-        group="root",
-        mode="644",
-    )
+        files.put(
+            name="Install acmetool hook.",
+            src=importlib.resources.files(__package__)
+            .joinpath("acmetool.hook")
+            .open("rb"),
+            dest="/etc/acme/hooks/nginx",
+            user="root",
+            group="root",
+            mode="755",
+        )
+        files.file(
+            name="Remove acmetool hook from the wrong location where it was previously installed.",
+            path="/usr/lib/acme/hooks/nginx",
+            present=False,
+        )

-    service_file = files.put(
-        src=importlib.resources.files(__package__).joinpath(
-            "acmetool-redirector.service"
-        ),
-        dest="/etc/systemd/system/acmetool-redirector.service",
-        user="root",
-        group="root",
-        mode="644",
-    )
+    def configure(self):
+        files.template(
+            src=importlib.resources.files(__package__).joinpath(
+                "response-file.yaml.j2"
+            ),
+            dest="/var/lib/acme/conf/responses",
+            user="root",
+            group="root",
+            mode="644",
+            email=self.email,
+        )

-    systemd.service(
-        name="Setup acmetool-redirector service",
-        service="acmetool-redirector.service",
-        running=True,
-        enabled=True,
-        restarted=service_file.changed,
-    )
+        files.template(
+            src=importlib.resources.files(__package__).joinpath("target.yaml.j2"),
+            dest="/var/lib/acme/conf/target",
+            user="root",
+            group="root",
+            mode="644",
+        )

-    reconcile_service_file = files.put(
-        src=importlib.resources.files(__package__).joinpath(
-            "acmetool-reconcile.service"
-        ),
-        dest="/etc/systemd/system/acmetool-reconcile.service",
-        user="root",
-        group="root",
-        mode="644",
-    )
+        service_file = files.put(
+            src=importlib.resources.files(__package__).joinpath(
+                "acmetool-redirector.service"
+            ),
+            dest="/etc/systemd/system/acmetool-redirector.service",
+            user="root",
+            group="root",
+            mode="644",
+        )
+        self.need_restart_redirector = service_file.changed

-    systemd.service(
-        name="Setup acmetool-reconcile service",
-        service="acmetool-reconcile.service",
-        running=False,
-        enabled=False,
-        daemon_reload=reconcile_service_file.changed,
-    )
+        reconcile_service_file = files.put(
+            src=importlib.resources.files(__package__).joinpath(
+                "acmetool-reconcile.service"
+            ),
+            dest="/etc/systemd/system/acmetool-reconcile.service",
+            user="root",
+            group="root",
+            mode="644",
+        )
+        self.need_restart_reconcile_service = reconcile_service_file.changed

-    reconcile_timer_file = files.put(
-        src=importlib.resources.files(__package__).joinpath("acmetool-reconcile.timer"),
-        dest="/etc/systemd/system/acmetool-reconcile.timer",
-        user="root",
-        group="root",
-        mode="644",
-    )
+        reconcile_timer_file = files.put(
+            src=importlib.resources.files(__package__).joinpath(
+                "acmetool-reconcile.timer"
+            ),
+            dest="/etc/systemd/system/acmetool-reconcile.timer",
+            user="root",
+            group="root",
+            mode="644",
+        )
+        self.need_restart_reconcile_timer = reconcile_timer_file.changed

-    systemd.service(
-        name="Setup acmetool-reconcile timer",
-        service="acmetool-reconcile.timer",
-        running=True,
-        enabled=True,
-        daemon_reload=reconcile_timer_file.changed,
-    )
+    def activate(self):
+        systemd.service(
+            name="Setup acmetool-redirector service",
+            service="acmetool-redirector.service",
+            running=True,
+            enabled=True,
+            restarted=self.need_restart_redirector,
+        )
+        self.need_restart_redirector = False

-    server.shell(
-        name=f"Request certificate for: {', '.join(domains)}",
-        commands=[f"acmetool want --xlog.severity=debug {' '.join(domains)}"],
-    )
+        systemd.service(
+            name="Setup acmetool-reconcile service",
+            service="acmetool-reconcile.service",
+            running=False,
+            enabled=False,
+            daemon_reload=self.need_restart_reconcile_service,
+        )
+        self.need_restart_reconcile_service = False
+
+        systemd.service(
+            name="Setup acmetool-reconcile timer",
+            service="acmetool-reconcile.timer",
+            running=True,
+            enabled=True,
+            daemon_reload=self.need_restart_reconcile_timer,
+        )
+        self.need_restart_reconcile_timer = False
+
+        server.shell(
+            name=f"Request certificate for: {', '.join(self.domains)}",
+            commands=[f"acmetool want --xlog.severity=debug {' '.join(self.domains)}"],
+        )
--- a/cmdeploy/src/cmdeploy/acmetool/response-file.yaml.j2
+++ b/cmdeploy/src/cmdeploy/acmetool/response-file.yaml.j2
@@ -1,2 +1,2 @@
 "acme-enter-email": "{{ email }}"
-"acme-agreement:https://letsencrypt.org/documents/LE-SA-v1.5-February-24-2025.pdf": true
+"acme-agreement:https://letsencrypt.org/documents/LE-SA-v1.6-August-18-2025.pdf": true
--- a/cmdeploy/src/cmdeploy/basedeploy.py
+++ b/cmdeploy/src/cmdeploy/basedeploy.py
@@ -0,0 +1,112 @@
+import importlib.resources
+import io
+import os
+
+from pyinfra.operations import files, server, systemd
+
+
+def get_resource(arg, pkg=__package__):
+    return importlib.resources.files(pkg).joinpath(arg)
+
+
+def configure_remote_units(mail_domain, units) -> None:
+    remote_base_dir = "/usr/local/lib/chatmaild"
+    remote_venv_dir = f"{remote_base_dir}/venv"
+    remote_chatmail_inipath = f"{remote_base_dir}/chatmail.ini"
+    root_owned = dict(user="root", group="root", mode="644")
+
+    # install systemd units
+    for fn in units:
+        execpath = fn if fn != "filtermail-incoming" else "filtermail"
+        params = dict(
+            execpath=f"{remote_venv_dir}/bin/{execpath}",
+            config_path=remote_chatmail_inipath,
+            remote_venv_dir=remote_venv_dir,
+            mail_domain=mail_domain,
+        )
+
+        basename = fn if "." in fn else f"{fn}.service"
+
+        source_path = get_resource(f"service/{basename}.f")
+        content = source_path.read_text().format(**params).encode()
+
+        files.put(
+            name=f"Upload {basename}",
+            src=io.BytesIO(content),
+            dest=f"/etc/systemd/system/{basename}",
+            **root_owned,
+        )
+
+
+def activate_remote_units(units) -> None:
+    # activate systemd units
+    for fn in units:
+        basename = fn if "." in fn else f"{fn}.service"
+
+        if fn == "chatmail-expire" or fn == "chatmail-fsreport":
+            # don't auto-start but let the corresponding timer trigger execution
+            enabled = False
+        else:
+            enabled = True
+        systemd.service(
+            name=f"Setup {basename}",
+            service=basename,
+            running=enabled,
+            enabled=enabled,
+            restarted=enabled,
+            daemon_reload=True,
+        )
+
+
+class Deployment:
+    def install(self, deployer):
+        # optional 'required_users' contains a list of (user, group, secondary-group-list) tuples.
+        # If the group is None, no group is created corresponding to that user.
+        # If the secondary group list is not None, all listed groups are created as well.
+        required_users = getattr(deployer, "required_users", [])
+        for user, group, groups in required_users:
+            if group is not None:
+                server.group(
+                    name="Create {} group".format(group), group=group, system=True
+                )
+            if groups is not None:
+                for group2 in groups:
+                    server.group(
+                        name="Create {} group".format(group2), group=group2, system=True
+                    )
+            server.user(
+                name="Create {} user".format(user),
+                user=user,
+                group=group,
+                groups=groups,
+                system=True,
+            )
+
+        deployer.install()
+
+    def configure(self, deployer):
+        deployer.configure()
+
+    def activate(self, deployer):
+        deployer.activate()
+
+    def perform_stages(self, deployers):
+        default_stages = "install,configure,activate"
+        stages = os.getenv("CMDEPLOY_STAGES", default_stages).split(",")
+
+        for stage in stages:
+            for deployer in deployers:
+                getattr(self, stage)(deployer)
+
+
+class Deployer:
+    need_restart = False
+
+    def install(self):
+        pass
+
+    def configure(self):
+        pass
+
+    def activate(self):
+        pass
--- a/cmdeploy/src/cmdeploy/cmdeploy.py
+++ b/cmdeploy/src/cmdeploy/cmdeploy.py
@@ -11,6 +11,7 @@ import pathlib
 import shutil
 import subprocess
 import sys
+import time
 from pathlib import Path

 import pyinfra
@@ -19,7 +20,7 @@ from packaging import version
 from termcolor import colored

 from . import dns, remote
-from .sshexec import SSHExec, LocalExec
+from .sshexec import LocalExec, SSHExec

 #
 # cmdeploy sub commands and options
@@ -95,7 +96,7 @@ def run_cmd(args, out):
    env["CHATMAIL_INI"] = args.inipath
    env["CHATMAIL_DISABLE_MAIL"] = "True" if args.disable_mail else ""
    env["CHATMAIL_REQUIRE_IROH"] = "True" if require_iroh else ""
-    deploy_path = importlib.resources.files(__package__).joinpath("deploy.py").resolve()
+    deploy_path = importlib.resources.files(__package__).joinpath("run.py").resolve()
    pyinf = "pyinfra --dry" if args.dry_run else "pyinfra"

    cmd = f"{pyinf} --ssh-user root {ssh_host} {deploy_path} -y"
@@ -109,15 +110,22 @@ def run_cmd(args, out):
    try:
        retcode = out.check_call(cmd, env=env)
        if retcode == 0:
-            if not args.disable_mail:
+            if not args.disable_mail and not args.dry_run:
                print("\nYou can try out the relay by talking to this echo bot: ")
-                sshexec = SSHExec(args.config.mail_domain, verbose=args.verbose)
-                print(
-                    sshexec(
-                        call=remote.rshell.shell,
-                        kwargs=dict(command="cat /var/lib/echobot/invite-link.txt"),
+                invite_path = Path("/var/lib/echobot/invite-link.txt")
+                if ssh_host in ["localhost", "@local", "@docker"]:
+                    while not invite_path.exists():
+                        time.sleep(0.1)
+                    with invite_path.open() as f:
+                        print(f.readline())
+                else:
+                    echo_sshexec = get_sshexec(ssh_host, verbose=args.verbose)
+                    print(
+                        echo_sshexec(
+                            call=remote.rshell.shell,
+                            kwargs=dict(command=f"cat {invite_path}"),
+                        )
                    )
-                )
            out.green("Deploy completed, call `cmdeploy dns` next.")
        elif not remote_data["acme_account_url"]:
            out.red("Deploy completed but letsencrypt not configured")
@@ -238,7 +246,12 @@ def fmt_cmd_options(parser):
 def fmt_cmd(args, out):
    """Run formattting fixes on all chatmail source code."""

-    sources = [str(importlib.resources.files(x)) for x in ("chatmaild", "cmdeploy")]
+    chatmaild_dir = importlib.resources.files("chatmaild").resolve()
+    cmdeploy_dir = chatmaild_dir.joinpath(
+        "..", "..", "..", "cmdeploy", "src", "cmdeploy"
+    ).resolve()
+    sources = [str(chatmaild_dir), str(cmdeploy_dir)]
+
    format_args = [shutil.which("ruff"), "format"]
    check_args = [shutil.which("ruff"), "check"]

@@ -309,7 +322,7 @@ def add_ssh_host_option(parser):
        "--ssh-host",
        dest="ssh_host",
        help="Run commands on 'localhost', via '@docker', or on a specific SSH host "
-             "instead of chatmail.ini's mail_domain.",
+        "instead of chatmail.ini's mail_domain.",
    )


--- a/cmdeploy/src/cmdeploy/deployers.py
+++ b/cmdeploy/src/cmdeploy/deployers.py
@@ -0,0 +1,598 @@
+"""
+Chat Mail pyinfra deploy.
+"""
+
+import shutil
+import subprocess
+import sys
+from io import StringIO
+from pathlib import Path
+
+from chatmaild.config import read_config
+from pyinfra import facts, host, logger
+from pyinfra.api import FactBase
+from pyinfra.facts.files import Sha256File
+from pyinfra.facts.systemd import SystemdEnabled
+from pyinfra.operations import apt, files, pip, server, systemd
+
+from cmdeploy.cmdeploy import Out
+
+from .acmetool import AcmetoolDeployer
+from .basedeploy import (
+    Deployer,
+    Deployment,
+    activate_remote_units,
+    configure_remote_units,
+    get_resource,
+)
+from .dovecot.deployer import DovecotDeployer
+from .mtail.deployer import MtailDeployer
+from .nginx.deployer import NginxDeployer
+from .opendkim.deployer import OpendkimDeployer
+from .postfix.deployer import PostfixDeployer
+from .www import build_webpages, find_merge_conflict, get_paths
+
+
+class Port(FactBase):
+    """
+    Returns the process occuping a port.
+    """
+
+    def command(self, port: int) -> str:
+        return (
+            "ss -lptn 'src :%d' | awk 'NR>1 {print $6,$7}' | sed 's/users:((\"//;s/\".*//'"
+            % (port,)
+        )
+
+    def process(self, output: [str]) -> str:
+        return output[0]
+
+
+def _build_chatmaild(dist_dir) -> None:
+    dist_dir = Path(dist_dir).resolve()
+    if dist_dir.exists():
+        shutil.rmtree(dist_dir)
+    dist_dir.mkdir()
+    subprocess.check_output(
+        [sys.executable, "-m", "build", "-n"]
+        + ["--sdist", "chatmaild", "--outdir", str(dist_dir)]
+    )
+    entries = list(dist_dir.iterdir())
+    assert len(entries) == 1
+    return entries[0]
+
+
+def remove_legacy_artifacts():
+    # disable legacy doveauth-dictproxy.service
+    if host.get_fact(SystemdEnabled).get("doveauth-dictproxy.service"):
+        systemd.service(
+            name="Disable legacy doveauth-dictproxy.service",
+            service="doveauth-dictproxy.service",
+            running=False,
+            enabled=False,
+        )
+
+
+def _install_remote_venv_with_chatmaild() -> None:
+    remove_legacy_artifacts()
+    dist_file = _build_chatmaild(dist_dir=Path("chatmaild/dist"))
+    remote_base_dir = "/usr/local/lib/chatmaild"
+    remote_dist_file = f"{remote_base_dir}/dist/{dist_file.name}"
+    remote_venv_dir = f"{remote_base_dir}/venv"
+    root_owned = dict(user="root", group="root", mode="644")
+
+    apt.packages(
+        name="apt install python3-virtualenv",
+        packages=["python3-virtualenv"],
+    )
+
+    files.put(
+        name="Upload chatmaild source package",
+        src=dist_file.open("rb"),
+        dest=remote_dist_file,
+        create_remote_dir=True,
+        **root_owned,
+    )
+
+    pip.virtualenv(
+        name=f"chatmaild virtualenv {remote_venv_dir}",
+        path=remote_venv_dir,
+        always_copy=True,
+    )
+
+    apt.packages(
+        name="install gcc and headers to build crypt_r source package",
+        packages=["gcc", "python3-dev"],
+    )
+
+    server.shell(
+        name=f"forced pip-install {dist_file.name}",
+        commands=[
+            f"{remote_venv_dir}/bin/pip install --force-reinstall {remote_dist_file}"
+        ],
+    )
+
+
+def _configure_remote_venv_with_chatmaild(config) -> None:
+    remote_base_dir = "/usr/local/lib/chatmaild"
+    remote_venv_dir = f"{remote_base_dir}/venv"
+    remote_chatmail_inipath = f"{remote_base_dir}/chatmail.ini"
+    root_owned = dict(user="root", group="root", mode="644")
+
+    files.put(
+        name=f"Upload {remote_chatmail_inipath}",
+        src=config._getbytefile(),
+        dest=remote_chatmail_inipath,
+        **root_owned,
+    )
+
+    files.template(
+        src=get_resource("metrics.cron.j2"),
+        dest="/etc/cron.d/chatmail-metrics",
+        user="root",
+        group="root",
+        mode="644",
+        config={
+            "mailboxes_dir": config.mailboxes_dir,
+            "execpath": f"{remote_venv_dir}/bin/chatmail-metrics",
+        },
+    )
+
+
+class UnboundDeployer(Deployer):
+    def install(self):
+        # Run local DNS resolver `unbound`.
+        # `resolvconf` takes care of setting up /etc/resolv.conf
+        # to use 127.0.0.1 as the resolver.
+
+        #
+        # On an IPv4-only system, if unbound is started but not
+        # configured, it causes subsequent steps to fail to resolve hosts.
+        # Here, we use policy-rc.d to prevent unbound from starting up
+        # on initial install.  Later, we will configure it and start it.
+        #
+        # For documentation about policy-rc.d, see:
+        # https://people.debian.org/~hmh/invokerc.d-policyrc.d-specification.txt
+        #
+        files.put(
+            src=get_resource("policy-rc.d"),
+            dest="/usr/sbin/policy-rc.d",
+            user="root",
+            group="root",
+            mode="755",
+        )
+
+        apt.packages(
+            name="Install unbound",
+            packages=["unbound", "unbound-anchor", "dnsutils"],
+        )
+
+        files.file("/usr/sbin/policy-rc.d", present=False)
+
+    def configure(self):
+        server.shell(
+            name="Generate root keys for validating DNSSEC",
+            commands=[
+                "unbound-anchor -a /var/lib/unbound/root.key || true",
+            ],
+        )
+
+    def activate(self):
+        server.shell(
+            name="Generate root keys for validating DNSSEC",
+            commands=[
+                "systemctl reset-failed unbound.service",
+            ],
+        )
+
+        systemd.service(
+            name="Start and enable unbound",
+            service="unbound.service",
+            running=True,
+            enabled=True,
+        )
+
+
+class MtastsDeployer(Deployer):
+    def configure(self):
+        # Remove configuration.
+        files.file("/etc/mta-sts-daemon.yml", present=False)
+        files.directory("/usr/local/lib/postfix-mta-sts-resolver", present=False)
+        files.file("/etc/systemd/system/mta-sts-daemon.service", present=False)
+
+    def activate(self):
+        systemd.service(
+            name="Stop MTA-STS daemon",
+            service="mta-sts-daemon.service",
+            daemon_reload=True,
+            running=False,
+            enabled=False,
+        )
+
+
+class WebsiteDeployer(Deployer):
+    def __init__(self, config):
+        self.config = config
+
+    def install(self):
+        files.directory(
+            name="Ensure /var/www exists",
+            path="/var/www",
+            user="root",
+            group="root",
+            mode="755",
+            present=True,
+        )
+
+    def configure(self):
+        www_path, src_dir, build_dir = get_paths(self.config)
+        # if www_folder was set to a non-existing folder, skip upload
+        if not www_path.is_dir():
+            logger.warning("Building web pages is disabled in chatmail.ini, skipping")
+        elif (path := find_merge_conflict(src_dir)) is not None:
+            logger.warning(
+                f"Merge conflict found in {path}, skipping website deployment. Fix merge conflict if you want to upload your web page."
+            )
+        else:
+            # if www_folder is a hugo page, build it
+            if build_dir:
+                www_path = build_webpages(src_dir, build_dir, self.config)
+            # if it is not a hugo page, upload it as is
+            files.rsync(
+                f"{www_path}/", "/var/www/html", flags=["-avz", "--chown=www-data"]
+            )
+
+
+class LegacyRemoveDeployer(Deployer):
+    def install(self):
+        apt.packages(name="Remove rspamd", packages="rspamd", present=False)
+
+        # remove historic expunge script
+        # which is now implemented through a systemd timer (chatmail-expire)
+        files.file(
+            path="/etc/cron.d/expunge",
+            present=False,
+        )
+
+        # Remove OBS repository key that is no longer used.
+        files.file("/etc/apt/keyrings/obs-home-deltachat.gpg", present=False)
+        files.line(
+            name="Remove DeltaChat OBS home repository from sources.list",
+            path="/etc/apt/sources.list",
+            line="deb [signed-by=/etc/apt/keyrings/obs-home-deltachat.gpg] https://download.opensuse.org/repositories/home:/deltachat/Debian_12/ ./",
+            escape_regex_characters=True,
+            present=False,
+        )
+
+        # prior relay versions used filelogging
+        files.directory(
+            name="Ensure old logs on disk are deleted",
+            path="/var/log/journal/",
+            present=False,
+        )
+
+
+def check_config(config):
+    mail_domain = config.mail_domain
+    if mail_domain != "testrun.org" and not mail_domain.endswith(".testrun.org"):
+        blocked_words = "merlinux schmieder testrun.org".split()
+        for key in config.__dict__:
+            value = config.__dict__[key]
+            if key.startswith("privacy") and any(
+                x in str(value) for x in blocked_words
+            ):
+                raise ValueError(
+                    f"please set your own privacy contacts/addresses in {config._inipath}"
+                )
+    return config
+
+
+class TurnDeployer(Deployer):
+    def __init__(self, mail_domain):
+        self.mail_domain = mail_domain
+        self.units = ["turnserver"]
+
+    def install(self):
+        (url, sha256sum) = {
+            "x86_64": (
+                "https://github.com/chatmail/chatmail-turn/releases/download/v0.3/chatmail-turn-x86_64-linux",
+                "841e527c15fdc2940b0469e206188ea8f0af48533be12ecb8098520f813d41e4",
+            ),
+            "aarch64": (
+                "https://github.com/chatmail/chatmail-turn/releases/download/v0.3/chatmail-turn-aarch64-linux",
+                "a5fc2d06d937b56a34e098d2cd72a82d3e89967518d159bf246dc69b65e81b42",
+            ),
+        }[host.get_fact(facts.server.Arch)]
+
+        existing_sha256sum = host.get_fact(Sha256File, "/usr/local/bin/chatmail-turn")
+        if existing_sha256sum != sha256sum:
+            server.shell(
+                name="Download chatmail-turn",
+                commands=[
+                    f"(curl -L {url} >/usr/local/bin/chatmail-turn.new && (echo '{sha256sum} /usr/local/bin/chatmail-turn.new' | sha256sum -c) && mv /usr/local/bin/chatmail-turn.new /usr/local/bin/chatmail-turn)",
+                    "chmod 755 /usr/local/bin/chatmail-turn",
+                ],
+            )
+
+    def configure(self):
+        configure_remote_units(self.mail_domain, self.units)
+
+    def activate(self):
+        activate_remote_units(self.units)
+
+
+class IrohDeployer(Deployer):
+    def __init__(self, enable_iroh_relay):
+        self.enable_iroh_relay = enable_iroh_relay
+
+    def install(self):
+        (url, sha256sum) = {
+            "x86_64": (
+                "https://github.com/n0-computer/iroh/releases/download/v0.35.0/iroh-relay-v0.35.0-x86_64-unknown-linux-musl.tar.gz",
+                "45c81199dbd70f8c4c30fef7f3b9727ca6e3cea8f2831333eeaf8aa71bf0fac1",
+            ),
+            "aarch64": (
+                "https://github.com/n0-computer/iroh/releases/download/v0.35.0/iroh-relay-v0.35.0-aarch64-unknown-linux-musl.tar.gz",
+                "f8ef27631fac213b3ef668d02acd5b3e215292746a3fc71d90c63115446008b1",
+            ),
+        }[host.get_fact(facts.server.Arch)]
+
+        existing_sha256sum = host.get_fact(Sha256File, "/usr/local/bin/iroh-relay")
+        if existing_sha256sum != sha256sum:
+            server.shell(
+                name="Download iroh-relay",
+                commands=[
+                    f"(curl -L {url} | gunzip | tar -x -f - ./iroh-relay -O >/usr/local/bin/iroh-relay.new && (echo '{sha256sum} /usr/local/bin/iroh-relay.new' | sha256sum -c) && mv /usr/local/bin/iroh-relay.new /usr/local/bin/iroh-relay)",
+                    "chmod 755 /usr/local/bin/iroh-relay",
+                ],
+            )
+
+            self.need_restart = True
+
+    def configure(self):
+        systemd_unit = files.put(
+            name="Upload iroh-relay systemd unit",
+            src=get_resource("iroh-relay.service"),
+            dest="/etc/systemd/system/iroh-relay.service",
+            user="root",
+            group="root",
+            mode="644",
+        )
+        self.need_restart |= systemd_unit.changed
+
+        iroh_config = files.put(
+            name="Upload iroh-relay config",
+            src=get_resource("iroh-relay.toml"),
+            dest="/etc/iroh-relay.toml",
+            user="root",
+            group="root",
+            mode="644",
+        )
+        self.need_restart |= iroh_config.changed
+
+    def activate(self):
+        systemd.service(
+            name="Start and enable iroh-relay",
+            service="iroh-relay.service",
+            running=True,
+            enabled=self.enable_iroh_relay,
+            restarted=self.need_restart,
+        )
+        self.need_restart = False
+
+
+class JournaldDeployer(Deployer):
+    def configure(self):
+        journald_conf = files.put(
+            name="Configure journald",
+            src=get_resource("journald.conf"),
+            dest="/etc/systemd/journald.conf",
+            user="root",
+            group="root",
+            mode="644",
+        )
+        self.need_restart = journald_conf.changed
+
+    def activate(self):
+        systemd.service(
+            name="Start and enable journald",
+            service="systemd-journald.service",
+            running=True,
+            enabled=True,
+            restarted=self.need_restart,
+        )
+        self.need_restart = False
+
+
+class EchobotDeployer(Deployer):
+    #
+    # This deployer depends on the dovecot and postfix deployers because
+    # it needs to base its decision of whether to restart the service on
+    # whether those two services were restarted.
+    #
+    def __init__(self, mail_domain):
+        self.mail_domain = mail_domain
+        self.units = ["echobot"]
+
+    def install(self):
+        apt.packages(
+            # required for setfacl for echobot
+            name="Install acl",
+            packages="acl",
+        )
+
+    def configure(self):
+        configure_remote_units(self.mail_domain, self.units)
+
+    def activate(self):
+        activate_remote_units(self.units)
+
+
+class ChatmailVenvDeployer(Deployer):
+    def __init__(self, config):
+        self.config = config
+        self.units = (
+            "filtermail",
+            "filtermail-incoming",
+            "chatmail-metadata",
+            "lastlogin",
+            "chatmail-expire",
+            "chatmail-expire.timer",
+            "chatmail-fsreport",
+            "chatmail-fsreport.timer",
+        )
+
+    def install(self):
+        _install_remote_venv_with_chatmaild()
+
+    def configure(self):
+        _configure_remote_venv_with_chatmaild(self.config)
+        configure_remote_units(self.config.mail_domain, self.units)
+
+    def activate(self):
+        activate_remote_units(self.units)
+
+
+class ChatmailDeployer(Deployer):
+    required_users = [
+        ("vmail", "vmail", None),
+        ("echobot", None, None),
+        ("iroh", None, None),
+    ]
+
+    def __init__(self, mail_domain):
+        self.mail_domain = mail_domain
+
+    def install(self):
+        apt.update(name="apt update", cache_time=24 * 3600)
+        apt.upgrade(name="upgrade apt packages", auto_remove=True)
+
+        apt.packages(
+            name="Install curl",
+            packages=["curl"],
+        )
+
+        apt.packages(
+            name="Install rsync",
+            packages=["rsync"],
+        )
+        apt.packages(
+            name="Ensure cron is installed",
+            packages=["cron"],
+        )
+
+    def configure(self):
+        # This file is used by auth proxy.
+        # https://wiki.debian.org/EtcMailName
+        server.shell(
+            name="Setup /etc/mailname",
+            commands=[
+                f"echo {self.mail_domain} >/etc/mailname; chmod 644 /etc/mailname"
+            ],
+        )
+
+
+class FcgiwrapDeployer(Deployer):
+    def install(self):
+        apt.packages(
+            name="Install fcgiwrap",
+            packages=["fcgiwrap"],
+        )
+
+    def activate(self):
+        systemd.service(
+            name="Start and enable fcgiwrap",
+            service="fcgiwrap.service",
+            running=True,
+            enabled=True,
+        )
+
+
+class GithashDeployer(Deployer):
+    def activate(self):
+        try:
+            git_hash = subprocess.check_output(["git", "rev-parse", "HEAD"]).decode()
+        except Exception:
+            git_hash = "unknown\n"
+        try:
+            git_diff = subprocess.check_output(["git", "diff"]).decode()
+        except Exception:
+            git_diff = ""
+        files.put(
+            name="Upload chatmail relay git commiit hash",
+            src=StringIO(git_hash + git_diff),
+            dest="/etc/chatmail-version",
+            mode="700",
+        )
+
+
+def deploy_chatmail(config_path: Path, disable_mail: bool) -> None:
+    """Deploy a chat-mail instance.
+
+    :param config_path: path to chatmail.ini
+    :param disable_mail: whether to disable postfix & dovecot
+    """
+    config = read_config(config_path)
+    check_config(config)
+    mail_domain = config.mail_domain
+
+    if host.get_fact(Port, port=53) != "unbound":
+        files.line(
+            name="Add 9.9.9.9 to resolv.conf",
+            path="/etc/resolv.conf",
+            line="nameserver 9.9.9.9",
+        )
+
+    port_services = [
+        (["master", "smtpd"], 25),
+        ("unbound", 53),
+        ("acmetool", 80),
+        (["imap-login", "dovecot"], 143),
+        ("nginx", 443),
+        (["master", "smtpd"], 465),
+        (["master", "smtpd"], 587),
+        (["imap-login", "dovecot"], 993),
+        ("iroh-relay", 3340),
+        ("nginx", 8443),
+        (["master", "smtpd"], config.postfix_reinject_port),
+        (["master", "smtpd"], config.postfix_reinject_port_incoming),
+        ("filtermail", config.filtermail_smtp_port),
+        ("filtermail", config.filtermail_smtp_port_incoming),
+    ]
+    for service, port in port_services:
+        print(f"Checking if port {port} is available for {service}...")
+        running_service = host.get_fact(Port, port=port)
+        if running_service:
+            if running_service not in service:
+                Out().red(
+                    f"Deploy failed: port {port} is occupied by: {running_service}"
+                )
+                exit(1)
+
+    tls_domains = [mail_domain, f"mta-sts.{mail_domain}", f"www.{mail_domain}"]
+
+    all_deployers = [
+        ChatmailDeployer(mail_domain),
+        LegacyRemoveDeployer(),
+        JournaldDeployer(),
+        UnboundDeployer(),
+        TurnDeployer(mail_domain),
+        IrohDeployer(config.enable_iroh_relay),
+        AcmetoolDeployer(config.acme_email, tls_domains),
+        WebsiteDeployer(config),
+        ChatmailVenvDeployer(config),
+        MtastsDeployer(),
+        OpendkimDeployer(mail_domain),
+        # Dovecot should be started before Postfix
+        # because it creates authentication socket
+        # required by Postfix.
+        DovecotDeployer(config, disable_mail),
+        PostfixDeployer(config, disable_mail),
+        FcgiwrapDeployer(),
+        NginxDeployer(config),
+        EchobotDeployer(mail_domain),
+        MtailDeployer(config.mtail_address),
+        GithashDeployer(),
+    ]
+
+    Deployment().perform_stages(all_deployers)
--- a/cmdeploy/src/cmdeploy/dns.py
+++ b/cmdeploy/src/cmdeploy/dns.py
@@ -45,7 +45,8 @@ def check_full_zone(sshexec, remote_data, out, zonefile) -> int:
    and return (exitcode, remote_data) tuple."""

    required_diff, recommended_diff = sshexec.logged(
-        remote.rdns.check_zonefile, kwargs=dict(zonefile=zonefile, verbose=False),
+        remote.rdns.check_zonefile,
+        kwargs=dict(zonefile=zonefile, verbose=False),
    )

    returncode = 0
--- a/cmdeploy/src/cmdeploy/dovecot/deployer.py
+++ b/cmdeploy/src/cmdeploy/dovecot/deployer.py
@@ -0,0 +1,137 @@
+from chatmaild.config import Config
+from pyinfra import host
+from pyinfra.facts.server import Arch, Sysctl
+from pyinfra.facts.systemd import SystemdEnabled
+from pyinfra.operations import apt, files, server, systemd
+
+from cmdeploy.basedeploy import (
+    Deployer,
+    activate_remote_units,
+    configure_remote_units,
+    get_resource,
+)
+
+
+class DovecotDeployer(Deployer):
+    def __init__(self, config, disable_mail):
+        self.config = config
+        self.disable_mail = disable_mail
+        self.units = ["doveauth"]
+
+    def install(self):
+        arch = host.get_fact(Arch)
+        if not "dovecot.service" in host.get_fact(SystemdEnabled):
+            _install_dovecot_package("core", arch)
+            _install_dovecot_package("imapd", arch)
+            _install_dovecot_package("lmtpd", arch)
+
+    def configure(self):
+        configure_remote_units(self.config.mail_domain, self.units)
+        self.need_restart = _configure_dovecot(self.config)
+
+    def activate(self):
+        activate_remote_units(self.units)
+
+        restart = False if self.disable_mail else self.need_restart
+
+        systemd.service(
+            name="disable dovecot for now"
+            if self.disable_mail
+            else "Start and enable Dovecot",
+            service="dovecot.service",
+            running=False if self.disable_mail else True,
+            enabled=False if self.disable_mail else True,
+            restarted=restart,
+        )
+        self.need_restart = False
+
+
+def _install_dovecot_package(package: str, arch: str):
+    arch = "amd64" if arch == "x86_64" else arch
+    arch = "arm64" if arch == "aarch64" else arch
+    url = f"https://download.delta.chat/dovecot/dovecot-{package}_2.3.21%2Bdfsg1-3_{arch}.deb"
+    deb_filename = "/root/" + url.split("/")[-1]
+
+    match (package, arch):
+        case ("core", "amd64"):
+            sha256 = "dd060706f52a306fa863d874717210b9fe10536c824afe1790eec247ded5b27d"
+        case ("core", "arm64"):
+            sha256 = "e7548e8a82929722e973629ecc40fcfa886894cef3db88f23535149e7f730dc9"
+        case ("imapd", "amd64"):
+            sha256 = "8d8dc6fc00bbb6cdb25d345844f41ce2f1c53f764b79a838eb2a03103eebfa86"
+        case ("imapd", "arm64"):
+            sha256 = "178fa877ddd5df9930e8308b518f4b07df10e759050725f8217a0c1fb3fd707f"
+        case ("lmtpd", "amd64"):
+            sha256 = "2f69ba5e35363de50962d42cccbfe4ed8495265044e244007d7ccddad77513ab"
+        case ("lmtpd", "arm64"):
+            sha256 = "89f52fb36524f5877a177dff4a713ba771fd3f91f22ed0af7238d495e143b38f"
+        case _:
+            apt.packages(packages=[f"dovecot-{package}"])
+            return
+
+    files.download(
+        name=f"Download dovecot-{package}",
+        src=url,
+        dest=deb_filename,
+        sha256sum=sha256,
+        cache_time=60 * 60 * 24 * 365 * 10,  # never redownload the package
+    )
+
+    apt.deb(name=f"Install dovecot-{package}", src=deb_filename)
+
+
+def _configure_dovecot(config: Config, debug: bool = False) -> bool:
+    """Configures Dovecot IMAP server."""
+    need_restart = False
+
+    main_config = files.template(
+        src=get_resource("dovecot/dovecot.conf.j2"),
+        dest="/etc/dovecot/dovecot.conf",
+        user="root",
+        group="root",
+        mode="644",
+        config=config,
+        debug=debug,
+        disable_ipv6=config.disable_ipv6,
+    )
+    need_restart |= main_config.changed
+    auth_config = files.put(
+        src=get_resource("dovecot/auth.conf"),
+        dest="/etc/dovecot/auth.conf",
+        user="root",
+        group="root",
+        mode="644",
+    )
+    need_restart |= auth_config.changed
+    lua_push_notification_script = files.put(
+        src=get_resource("dovecot/push_notification.lua"),
+        dest="/etc/dovecot/push_notification.lua",
+        user="root",
+        group="root",
+        mode="644",
+    )
+    need_restart |= lua_push_notification_script.changed
+
+    # as per https://doc.dovecot.org/configuration_manual/os/
+    # it is recommended to set the following inotify limits
+    for name in ("max_user_instances", "max_user_watches"):
+        key = f"fs.inotify.{name}"
+        if host.get_fact(Sysctl)[key] > 65535:
+            # Skip updating limits if already sufficient
+            # (enables running in incus containers where sysctl readonly)
+            continue
+        server.sysctl(
+            name=f"Change {key}",
+            key=key,
+            value=65535,
+            persist=True,
+        )
+
+    timezone_env = files.line(
+        name="Set TZ environment variable",
+        path="/etc/environment",
+        line="TZ=:/etc/localtime",
+    )
+    need_restart |= timezone_env.changed
+
+    return need_restart
--- a/cmdeploy/src/cmdeploy/mtail/deployer.py
+++ b/cmdeploy/src/cmdeploy/mtail/deployer.py
@@ -0,0 +1,68 @@
+from pyinfra import facts, host
+from pyinfra.operations import apt, files, server, systemd
+
+from cmdeploy.basedeploy import (
+    Deployer,
+    get_resource,
+)
+
+
+class MtailDeployer(Deployer):
+    def __init__(self, mtail_address):
+        self.mtail_address = mtail_address
+
+    def install(self):
+        # Uninstall mtail package to install a static binary.
+        apt.packages(name="Uninstall mtail", packages=["mtail"], present=False)
+
+        (url, sha256sum) = {
+            "x86_64": (
+                "https://github.com/google/mtail/releases/download/v3.0.8/mtail_3.0.8_linux_amd64.tar.gz",
+                "123c2ee5f48c3eff12ebccee38befd2233d715da736000ccde49e3d5607724e4",
+            ),
+            "aarch64": (
+                "https://github.com/google/mtail/releases/download/v3.0.8/mtail_3.0.8_linux_arm64.tar.gz",
+                "aa04811c0929b6754408676de520e050c45dddeb3401881888a092c9aea89cae",
+            ),
+        }[host.get_fact(facts.server.Arch)]
+
+        server.shell(
+            name="Download mtail",
+            commands=[
+                f"(echo '{sha256sum} /usr/local/bin/mtail' | sha256sum -c) || (curl -L {url} | gunzip | tar -x -f - mtail -O >/usr/local/bin/mtail.new && mv /usr/local/bin/mtail.new /usr/local/bin/mtail)",
+                "chmod 755 /usr/local/bin/mtail",
+            ],
+        )
+
+    def configure(self):
+        # Using our own systemd unit instead of `/usr/lib/systemd/system/mtail.service`.
+        # This allows to read from journalctl instead of log files.
+        files.template(
+            src=get_resource("mtail/mtail.service.j2"),
+            dest="/etc/systemd/system/mtail.service",
+            user="root",
+            group="root",
+            mode="644",
+            address=self.mtail_address or "127.0.0.1",
+            port=3903,
+        )
+
+        mtail_conf = files.put(
+            name="Mtail configuration",
+            src=get_resource("mtail/delivered_mail.mtail"),
+            dest="/etc/mtail/delivered_mail.mtail",
+            user="root",
+            group="root",
+            mode="644",
+        )
+        self.need_restart = mtail_conf.changed
+
+    def activate(self):
+        systemd.service(
+            name="Start and enable mtail",
+            service="mtail.service",
+            running=bool(self.mtail_address),
+            enabled=bool(self.mtail_address),
+            restarted=self.need_restart,
+        )
+        self.need_restart = False
--- a/cmdeploy/src/cmdeploy/nginx/deployer.py
+++ b/cmdeploy/src/cmdeploy/nginx/deployer.py
@@ -0,0 +1,117 @@
+from chatmaild.config import Config
+from pyinfra.operations import apt, files, systemd
+
+from cmdeploy.basedeploy import (
+    Deployer,
+    get_resource,
+)
+
+
+class NginxDeployer(Deployer):
+    def __init__(self, config):
+        self.config = config
+
+    def install(self):
+        #
+        # If we allow nginx to start up on install, it will grab port
+        # 80, which then will block acmetool from listening on the port.
+        # That in turn prevents getting certificates, which then causes
+        # an error when we try to start nginx on the custom config
+        # that leaves port 80 open but also requires certificates to
+        # be present.  To avoid getting into that interlocking mess,
+        # we use policy-rc.d to prevent nginx from starting up when it
+        # is installed.
+        #
+        # This approach allows us to avoid performing any explicit
+        # systemd operations during the install stage (as opposed to
+        # allowing it to start and then forcing it to stop), which allows
+        # the install stage to run in non-systemd environments like a
+        # container image build.
+        #
+        # For documentation about policy-rc.d, see:
+        # https://people.debian.org/~hmh/invokerc.d-policyrc.d-specification.txt
+        #
+        files.put(
+            src=get_resource("policy-rc.d"),
+            dest="/usr/sbin/policy-rc.d",
+            user="root",
+            group="root",
+            mode="755",
+        )
+
+        apt.packages(
+            name="Install nginx",
+            packages=["nginx", "libnginx-mod-stream"],
+        )
+
+        files.file("/usr/sbin/policy-rc.d", present=False)
+
+    def configure(self):
+        self.need_restart = _configure_nginx(self.config)
+
+    def activate(self):
+        systemd.service(
+            name="Start and enable nginx",
+            service="nginx.service",
+            running=True,
+            enabled=True,
+            restarted=self.need_restart,
+        )
+        self.need_restart = False
+
+
+def _configure_nginx(config: Config, debug: bool = False) -> bool:
+    """Configures nginx HTTP server."""
+    need_restart = False
+
+    main_config = files.template(
+        src=get_resource("nginx/nginx.conf.j2"),
+        dest="/etc/nginx/nginx.conf",
+        user="root",
+        group="root",
+        mode="644",
+        config={"domain_name": config.mail_domain},
+        disable_ipv6=config.disable_ipv6,
+    )
+    need_restart |= main_config.changed
+
+    autoconfig = files.template(
+        src=get_resource("nginx/autoconfig.xml.j2"),
+        dest="/var/www/html/.well-known/autoconfig/mail/config-v1.1.xml",
+        user="root",
+        group="root",
+        mode="644",
+        config={"domain_name": config.mail_domain},
+    )
+    need_restart |= autoconfig.changed
+
+    mta_sts_config = files.template(
+        src=get_resource("nginx/mta-sts.txt.j2"),
+        dest="/var/www/html/.well-known/mta-sts.txt",
+        user="root",
+        group="root",
+        mode="644",
+        config={"domain_name": config.mail_domain},
+    )
+    need_restart |= mta_sts_config.changed
+
+    # install CGI newemail script
+    #
+    cgi_dir = "/usr/lib/cgi-bin"
+    files.directory(
+        name=f"Ensure {cgi_dir} exists",
+        path=cgi_dir,
+        user="root",
+        group="root",
+    )
+
+    files.put(
+        name="Upload cgi newemail.py script",
+        src=get_resource("newemail.py", pkg="chatmaild").open("rb"),
+        dest=f"{cgi_dir}/newemail.py",
+        user="root",
+        group="root",
+        mode="755",
+    )
+
+    return need_restart
--- a/cmdeploy/src/cmdeploy/obs-home-deltachat.gpg
+++ b/cmdeploy/src/cmdeploy/obs-home-deltachat.gpg
--- a/cmdeploy/src/cmdeploy/opendkim/deployer.py
+++ b/cmdeploy/src/cmdeploy/opendkim/deployer.py
@@ -0,0 +1,123 @@
+"""
+Installs OpenDKIM
+"""
+
+from pyinfra import host
+from pyinfra.facts.files import File
+from pyinfra.operations import apt, files, server, systemd
+
+from cmdeploy.basedeploy import Deployer, get_resource
+
+
+class OpendkimDeployer(Deployer):
+    required_users = [("opendkim", None, ["opendkim"])]
+
+    def __init__(self, mail_domain):
+        self.mail_domain = mail_domain
+
+    def install(self):
+        apt.packages(
+            name="apt install opendkim opendkim-tools",
+            packages=["opendkim", "opendkim-tools"],
+        )
+
+    def configure(self):
+        domain = self.mail_domain
+        dkim_selector = "opendkim"
+        """Configures OpenDKIM"""
+        need_restart = False
+
+        main_config = files.template(
+            src=get_resource("opendkim/opendkim.conf"),
+            dest="/etc/opendkim.conf",
+            user="root",
+            group="root",
+            mode="644",
+            config={"domain_name": domain, "opendkim_selector": dkim_selector},
+        )
+        need_restart |= main_config.changed
+
+        screen_script = files.put(
+            src=get_resource("opendkim/screen.lua"),
+            dest="/etc/opendkim/screen.lua",
+            user="root",
+            group="root",
+            mode="644",
+        )
+        need_restart |= screen_script.changed
+
+        final_script = files.put(
+            src=get_resource("opendkim/final.lua"),
+            dest="/etc/opendkim/final.lua",
+            user="root",
+            group="root",
+            mode="644",
+        )
+        need_restart |= final_script.changed
+
+        files.directory(
+            name="Add opendkim directory to /etc",
+            path="/etc/opendkim",
+            user="opendkim",
+            group="opendkim",
+            mode="750",
+            present=True,
+        )
+
+        keytable = files.template(
+            src=get_resource("opendkim/KeyTable"),
+            dest="/etc/dkimkeys/KeyTable",
+            user="opendkim",
+            group="opendkim",
+            mode="644",
+            config={"domain_name": domain, "opendkim_selector": dkim_selector},
+        )
+        need_restart |= keytable.changed
+
+        signing_table = files.template(
+            src=get_resource("opendkim/SigningTable"),
+            dest="/etc/dkimkeys/SigningTable",
+            user="opendkim",
+            group="opendkim",
+            mode="644",
+            config={"domain_name": domain, "opendkim_selector": dkim_selector},
+        )
+        need_restart |= signing_table.changed
+        files.directory(
+            name="Add opendkim socket directory to /var/spool/postfix",
+            path="/var/spool/postfix/opendkim",
+            user="opendkim",
+            group="opendkim",
+            mode="750",
+            present=True,
+        )
+
+        if not host.get_fact(File, f"/etc/dkimkeys/{dkim_selector}.private"):
+            server.shell(
+                name="Generate OpenDKIM domain keys",
+                commands=[
+                    f"/usr/sbin/opendkim-genkey -D /etc/dkimkeys -d {domain} -s {dkim_selector}"
+                ],
+                _use_su_login=True,
+                _su_user="opendkim",
+            )
+
+        service_file = files.put(
+            name="Configure opendkim to restart once a day",
+            src=get_resource("opendkim/systemd.conf"),
+            dest="/etc/systemd/system/opendkim.service.d/10-prevent-memory-leak.conf",
+        )
+        need_restart |= service_file.changed
+
+        self.need_restart = need_restart
+
+    def activate(self):
+        systemd.service(
+            name="Start and enable OpenDKIM",
+            service="opendkim.service",
+            running=True,
+            enabled=True,
+            daemon_reload=self.need_restart,
+            restarted=self.need_restart,
+        )
+        self.need_restart = False
--- a/cmdeploy/src/cmdeploy/opendkim/final.lua
+++ b/cmdeploy/src/cmdeploy/opendkim/final.lua
@@ -9,9 +9,10 @@ if nsigs == nil then
 	return nil
 end

+local valid = false
 for i = 1, nsigs do
-        sig = odkim.get_sighandle(ctx, i - 1)
-        sigres = odkim.sig_result(sig)
+	sig = odkim.get_sighandle(ctx, i - 1)
+	sigres = odkim.sig_result(sig)

 	-- All signatures that do not correspond to From: 
 	-- were ignored in screen.lua and return sigres -1.
@@ -19,10 +20,19 @@ for i = 1, nsigs do
 	-- Any valid signature that was not ignored like this
 	-- means the message is acceptable.
 	if sigres == 0 then
-		return nil
-	end	
+		valid = true
+	end
+end
+
+if valid then
+	-- Strip all DKIM-Signature headers after successful validation
+	-- Delete in reverse order to avoid index shifting.
+	for i = nsigs, 1, -1 do
+		odkim.del_header(ctx, "DKIM-Signature", i)
+	end
+else
+	odkim.set_reply(ctx, "554", "5.7.1", "No valid DKIM signature found")
+	odkim.set_result(ctx, SMFIS_REJECT)
 end

-odkim.set_reply(ctx, "554", "5.7.1", "No valid DKIM signature found")
-odkim.set_result(ctx, SMFIS_REJECT)
 return nil
--- a/cmdeploy/src/cmdeploy/policy-rc.d
+++ b/cmdeploy/src/cmdeploy/policy-rc.d
@@ -0,0 +1,3 @@
+#!/bin/sh
+echo "All runlevel operations denied by policy" >&2
+exit 101
--- a/cmdeploy/src/cmdeploy/postfix/deployer.py
+++ b/cmdeploy/src/cmdeploy/postfix/deployer.py
@@ -0,0 +1,77 @@
+from pyinfra.operations import apt, files, systemd
+
+from cmdeploy.basedeploy import Deployer, get_resource
+
+
+class PostfixDeployer(Deployer):
+    required_users = [("postfix", None, ["opendkim"])]
+
+    def __init__(self, config, disable_mail):
+        self.config = config
+        self.disable_mail = disable_mail
+
+    def install(self):
+        apt.packages(
+            name="Install Postfix",
+            packages="postfix",
+        )
+
+    def configure(self):
+        config = self.config
+        need_restart = False
+
+        main_config = files.template(
+            src=get_resource("postfix/main.cf.j2"),
+            dest="/etc/postfix/main.cf",
+            user="root",
+            group="root",
+            mode="644",
+            config=config,
+            disable_ipv6=config.disable_ipv6,
+        )
+        need_restart |= main_config.changed
+
+        master_config = files.template(
+            src=get_resource("postfix/master.cf.j2"),
+            dest="/etc/postfix/master.cf",
+            user="root",
+            group="root",
+            mode="644",
+            debug=False,
+            config=config,
+        )
+        need_restart |= master_config.changed
+
+        header_cleanup = files.put(
+            src=get_resource("postfix/submission_header_cleanup"),
+            dest="/etc/postfix/submission_header_cleanup",
+            user="root",
+            group="root",
+            mode="644",
+        )
+        need_restart |= header_cleanup.changed
+
+        # Login map that 1:1 maps email address to login.
+        login_map = files.put(
+            src=get_resource("postfix/login_map"),
+            dest="/etc/postfix/login_map",
+            user="root",
+            group="root",
+            mode="644",
+        )
+        need_restart |= login_map.changed
+        self.need_restart = need_restart
+
+    def activate(self):
+        restart = False if self.disable_mail else self.need_restart
+
+        systemd.service(
+            name="disable postfix for now"
+            if self.disable_mail
+            else "Start and enable Postfix",
+            service="postfix.service",
+            running=False if self.disable_mail else True,
+            enabled=False if self.disable_mail else True,
+            restarted=restart,
+        )
+        self.need_restart = False
--- a/cmdeploy/src/cmdeploy/postfix/main.cf.j2
+++ b/cmdeploy/src/cmdeploy/postfix/main.cf.j2
@@ -27,7 +27,7 @@ smtp_tls_servername = hostname
 smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
 smtp_tls_policy_maps = inline:{nauta.cu=may}
 smtp_tls_protocols = >=TLSv1.2
-smtpd_tls_protocols = >=TLSv1.2
+smtp_tls_mandatory_protocols = >=TLSv1.2

 # Disable anonymous cipher suites
 # and known insecure algorithms.
--- a/cmdeploy/src/cmdeploy/postfix/master.cf.j2
+++ b/cmdeploy/src/cmdeploy/postfix/master.cf.j2
@@ -15,6 +15,7 @@ smtp      inet  n       -       y       -       -       smtpd -v
 smtp      inet  n       -       y       -       -       smtpd 
 {%- endif %}
  -o smtpd_tls_security_level=encrypt
+  -o smtpd_tls_mandatory_protocols=>=TLSv1.2
  -o smtpd_proxy_filter=127.0.0.1:{{ config.filtermail_smtp_port_incoming }}
 submission inet n       -       y       -       5000    smtpd
  -o syslog_name=postfix/submission
--- a/cmdeploy/src/cmdeploy/remote/rdns.py
+++ b/cmdeploy/src/cmdeploy/remote/rdns.py
@@ -12,7 +12,7 @@ All functions of this module

 import re

-from .rshell import CalledProcessError, shell, log_progress
+from .rshell import CalledProcessError, log_progress, shell


 def perform_initial_checks(mail_domain, pre_command=""):
@@ -26,7 +26,9 @@ def perform_initial_checks(mail_domain, pre_command=""):
    WWW = query_dns("CNAME", f"www.{mail_domain}")

    res = dict(mail_domain=mail_domain, A=A, AAAA=AAAA, MTA_STS=MTA_STS, WWW=WWW)
-    res["acme_account_url"] = shell(pre_command + "acmetool account-url", fail_ok=True, print=log_progress)
+    res["acme_account_url"] = shell(
+        pre_command + "acmetool account-url", fail_ok=True, print=log_progress
+    )
    res["dkim_entry"], res["web_dkim_entry"] = get_dkim_entry(
        mail_domain, pre_command, dkim_selector="opendkim"
    )
@@ -45,7 +47,7 @@ def get_dkim_entry(mail_domain, pre_command, dkim_selector):
        dkim_pubkey = shell(
            f"{pre_command}openssl rsa -in /etc/dkimkeys/{dkim_selector}.private "
            "-pubout 2>/dev/null | awk '/-/{next}{printf(\"%s\",$0)}'",
-            print=log_progress
+            print=log_progress,
        )
    except CalledProcessError:
        return
@@ -62,9 +64,9 @@ def query_dns(typ, domain):
    # Get autoritative nameserver from the SOA record.
    soa_answers = [
        x.split()
-        for x in shell(f"dig -r -q {domain} -t SOA +noall +authority +answer", print=log_progress).split(
-            "\n"
-        )
+        for x in shell(
+            f"dig -r -q {domain} -t SOA +noall +authority +answer", print=log_progress
+        ).split("\n")
    ]
    soa = [a for a in soa_answers if len(a) >= 3 and a[3] == "SOA"]
    if not soa:
@@ -73,7 +75,7 @@ def query_dns(typ, domain):

    # Query authoritative nameserver directly to bypass DNS cache.
    res = shell(f"dig @{ns} -r -q {domain} -t {typ} +short", print=log_progress)
-    return next((line for line in res.split("\n") if not line.startswith(';')), '')
+    return next((line for line in res.split("\n") if not line.startswith(";")), "")


 def check_zonefile(zonefile, verbose=True):
--- a/cmdeploy/src/cmdeploy/remote/rshell.py
+++ b/cmdeploy/src/cmdeploy/remote/rshell.py
@@ -1,5 +1,4 @@
 import sys
-
 from subprocess import DEVNULL, CalledProcessError, check_output


--- a/cmdeploy/src/cmdeploy/deploy.py
+++ b/cmdeploy/src/cmdeploy/deploy.py
@@ -3,7 +3,9 @@ import os

 import pyinfra

-from cmdeploy import deploy_chatmail
+# pyinfra runs this module as a python file and not as a module so
+# import paths must be absolute
+from cmdeploy.deployers import deploy_chatmail


 def main():
--- a/cmdeploy/src/cmdeploy/sshexec.py
+++ b/cmdeploy/src/cmdeploy/sshexec.py
@@ -93,7 +93,7 @@ class LocalExec:
        where = "locally"
        if self.docker:
            if call == remote.rdns.perform_initial_checks:
-                kwargs['pre_command'] = "docker exec chatmail "
+                kwargs["pre_command"] = "docker exec chatmail "
                where = "in docker"
        if self.verbose:
            print(f"Running {where}: {call.__name__}(**{kwargs})")
--- a/cmdeploy/src/cmdeploy/tests/online/test_1_basic.py
+++ b/cmdeploy/src/cmdeploy/tests/online/test_1_basic.py
@@ -35,7 +35,7 @@ class TestSSHExecutor:
        out, err = capsys.readouterr()
        assert err.startswith("Collecting")
        # XXX could not figure out how capturing can be made to work properly
-        #assert err.endswith("....\n")
+        # assert err.endswith("....\n")
        assert err.count("\n") == 1

        sshexec.verbose = True
@@ -45,7 +45,7 @@ class TestSSHExecutor:
        out, err = capsys.readouterr()
        lines = err.split("\n")
        # XXX could not figure out how capturing can be made to work properly
-        #assert len(lines) > 4
+        # assert len(lines) > 4
        assert remote.rdns.perform_initial_checks.__doc__ in lines[0]

    def test_exception(self, sshexec, capsys):
--- a/cmdeploy/src/cmdeploy/tests/test_dns.py
+++ b/cmdeploy/src/cmdeploy/tests/test_dns.py
@@ -65,7 +65,9 @@ class TestPerformInitialChecks:
        remote_data = remote.rdns.perform_initial_checks("some.domain")
        assert remote_data["A"] == mockdns_expected["A"]["some.domain"]
        assert remote_data["AAAA"] == mockdns_expected["AAAA"]["some.domain"]
-        assert remote_data["MTA_STS"] == mockdns_expected["CNAME"]["mta-sts.some.domain"]
+        assert (
+            remote_data["MTA_STS"] == mockdns_expected["CNAME"]["mta-sts.some.domain"]
+        )
        assert remote_data["WWW"] == mockdns_expected["CNAME"]["www.some.domain"]

    @pytest.mark.parametrize("drop", ["A", "AAAA"])
--- a/cmdeploy/src/cmdeploy/www.py
+++ b/cmdeploy/src/cmdeploy/www.py
@@ -1,10 +1,10 @@
 import hashlib
 import importlib.resources
+import re
 import time
 import traceback
 import webbrowser
 from pathlib import Path
-import re

 import markdown
 from chatmaild.config import read_config
@@ -12,8 +12,9 @@ from jinja2 import Template

 from .genqr import gen_qr_png_data

-
-_MERGE_CONFLICT_RE = re.compile(r"^<<<<<<<.+^=======.+^>>>>>>>", re.DOTALL | re.MULTILINE)
+_MERGE_CONFLICT_RE = re.compile(
+    r"^<<<<<<<.+^=======.+^>>>>>>>", re.DOTALL | re.MULTILINE
+)


 def snapshot_dir_stats(somedir):
@@ -139,34 +140,34 @@ def main():
    config.webdev = True
    assert config.mail_domain

-    # start web page generation, open a browser and wait for changes
    www_path, src_path, build_dir = get_paths(config)
    build_dir = build_webpages(src_path, build_dir, config)
    index_path = build_dir.joinpath("index.html")
    webbrowser.open(str(index_path))
-    stats = snapshot_dir_stats(src_path)
+
    print(f"\nOpened URL: file://{index_path.resolve()}\n")
-    print(f"watching {src_path} directory for changes")
+    print(f"Watching {src_path} directory for changes...")

+    stats = snapshot_dir_stats(src_path)
    changenum = 0
-    count = 0
+    debounce_time = 0.5  # wait 0.5s after detecting a change
+
    while True:
+        time.sleep(1)
        newstats = snapshot_dir_stats(src_path)
-        if newstats == stats and count % 60 != 0:
-            count += 1
-            time.sleep(1.0)
-            continue

-        for key in newstats:
-            if stats[key] != newstats[key]:
-                print(f"*** CHANGED: {key}")
-                changenum += 1
+        if newstats != stats:
+            changed_files = [f for f in newstats if stats.get(f) != newstats[f]]
+            for f in changed_files:
+                print(f"*** CHANGED: {f}")

-        stats = newstats
-        build_webpages(src_path, build_dir, config)
-        print(f"[{changenum}] regenerated web pages at: {index_path}")
-        print(f"URL: file://{index_path.resolve()}\n\n")
-        count = 0
+            stats = newstats
+            changenum += 1
+            build_webpages(src_path, build_dir, config)
+            print(f"[{changenum}] regenerated web pages at: {index_path}")
+            print(f"URL: file://{index_path.resolve()}\n\n")
+            
+            time.sleep(debounce_time)  # simple debounce


 if __name__ == "__main__":
--- a/doc/source/overview.rst
+++ b/doc/source/overview.rst
@@ -126,14 +126,13 @@ web page. Edit them before deploying to make your chatmail relay
 stand out.


-Component dependency diagram
--------------------------------------
+Chatmail relay dependency diagram
+---------------------------------

 .. mermaid::
   :caption: This diagram shows relay components and dependencies/communication paths.

    graph LR;
-        cmdeploy --- sshd;
        letsencrypt --- |80|acmetool-redirector;
        acmetool-redirector --- |443|nginx-right(["`nginx
        (external)`"]);
@@ -147,33 +146,62 @@ Component dependency diagram
        nginx-internal --- autoconfig.xml;
        certs-nginx[("`TLS certs
        /var/lib/acme`")] --> nginx-internal;
-        cron --- chatmail-metrics;
-        cron --- acmetool;
+        systemd-timer --- chatmail-metrics;
+        systemd-timer --- acmetool;
+        systemd-timer --- chatmail-expire-daily;
+        systemd-timer --- chatmail-fsreport-daily;
        chatmail-metrics --- website;
        acmetool --> certs[("`TLS certs
        /var/lib/acme`")];
        nginx-external --- |993|dovecot;
+        postfix --- |SASL|dovecot;
        autoconfig.xml --- postfix;
        autoconfig.xml --- dovecot;
-        postfix --- echobot;
-        postfix --- |10080,10081|filtermail;
-        postfix --- users["`User data
-        home/vmail/mail`"];
-        postfix --- |doveauth.socket|doveauth;
+        postfix --- |10080|filtermail-outgoing;
+        postfix --- |10081|filtermail-incoming;
+        filtermail-outgoing --- |10025 reinject|postfix;
+        filtermail-incoming --- |10026 reinject|postfix;
        dovecot --- |doveauth.socket|doveauth;
-        dovecot --- users;
-        dovecot --- |metadata.socket|chatmail-metadata;
-        doveauth --- users;
-        chatmail-expire-daily --- users;
-        chatmail-fsreport-daily --- users;
+        dovecot --- |message delivery|maildir["maildir
+        /home/vmail/.../user"];
+        dovecot --- |lastlogin.socket|lastlogin;
+        dovecot --- chatmail-metadata;
+        lastlogin --- maildir;
+        doveauth --- maildir;
+        chatmail-expire-daily --- maildir;
+        chatmail-fsreport-daily --- maildir;
        chatmail-metadata --- iroh-relay;
+        chatmail-metadata --- |encrypted device token| notifications.delta.chat;
        certs-nginx --> postfix;
        certs-nginx --> dovecot;
        style certs fill:#ff6;
+        style website fill:#ff6;
+        style maildir fill:#ff6;
        style certs-nginx fill:#ff6;
-        style nginx-external fill:#fc9;
-        style nginx-right fill:#fc9;
+        style nginx-external fill:#f66;
+        style nginx-right fill:#f66;
+        style postfix fill:#f66;
+        style dovecot fill:#f66;
+        style notification-proxy fill:#f66;

+Message between users on the same relay
+---------------------------------------
+
+.. mermaid::
+    :caption: This diagram shows the path a non-federated message takes.
+
+    graph LR;
+        sender --> |465|smtps/smtpd;
+        sender --> |587|submission/smtpd;
+        smtps/smtpd --> |10080|filtermail;
+        submission/smtpd --> |10080|filtermail;
+        filtermail --> |10025|smtpd_reinject;
+        smtpd_reinject --> cleanup;
+        cleanup --> qmgr;
+        qmgr --> smtpd_accepts_message;
+        qmgr --> |lmtp|dovecot;
+        dovecot --> recipient;
+        dovecot --> sender's_other_devices;

 Operational details of a chatmail relay
 ----------------------------------------
@@ -245,9 +273,11 @@ Incoming emails must have a valid DKIM signature with
 Signing Domain Identifier (SDID, ``d=`` parameter in the DKIM-Signature
 header) equal to the ``From:`` header domain. This property is checked
 by OpenDKIM screen policy script before validating the signatures. This
-correpsonds to strict :rfc:`DMARC <7489>` alignment (``adkim=s``).
+corresponds to strict :rfc:`DMARC <7489>` alignment (``adkim=s``).
 If there is no valid DKIM signature on the incoming email, the
 sender receives a “5.7.1 No valid DKIM signature found” error.
+After validating the DKIM signature, 
+the `final.lua` script strips all ``OpenDKIM:`` headers to reduce message size on disc. 

 Note that chatmail relays

@@ -297,3 +327,48 @@ actually it is a problem with your TLS certificate.
 .. _nginx: https://nginx.org
 .. _pyinfra: https://pyinfra.com

+
+Architecture of cmdeploy
+------------------------
+
+cmdeploy is a Python program that uses the pyinfra library to deploy
+chatmail relays, with all the necessary software, configuration, and
+services.  The deployment process performs three primary types of
+operation:
+
+1. Installation of software, universal across all deployments.
+2. Configuration of software, with deploy-specific variations.
+3. Activation of services.
+
+The process is implemented through a family of "deployer" objects
+which all derive from a common ``Deployer`` base class, defined in
+cmdeploy/src/cmdeploy/deployer.py.  Each object provides
+implementation methods for the three stages -- install, configure, and
+activate.  The top-level procedure in ``deploy_chatmail()`` calls
+these methods for all the deployer objects, via the
+``Deployment.perform_stages()`` method, also defined in deployer.py.
+This first calls all the install methods, then the configure methods,
+then the activate methods.
+
+The ``Deployment`` class also implements support for a CMDEPLOY_STAGES
+environment variable, which allows limiting the process to specific
+stages.  Note that some deployers are stateful between the stages
+(this is one reason why they are implemented as objects), and that
+state will not get propagated between stages when run in separate
+invocations of cmdeploy.  This environment variable is intended for
+use in future revisions to support building Docker images with
+software pre-installed, and configuration of containers at run time
+from environment variables.
+
+The, ``install()`` methods for the deployer classes should use 'self'
+as little as possible, preferably not at all.  In particular,
+``install()`` methods should never depend on "config" data, such as
+the config dictionary in ``self.config`` or specific values like
+``self.mail_domain``.  This ensures that these methods can be used to
+perform generic installation operations that are applicable across
+multiple relay deployments, and therefore can be called in the process
+of building a general-purpose container image.
+
+Operations that start services for systemd-based deployments should
+only be called from the ``activate_impl()`` methods.  These methods
+will not be called in non-systemd container environments.
--- a/doc/source/proxy.rst
+++ b/doc/source/proxy.rst
@@ -22,7 +22,12 @@ Note that your chatmail relay still needs to be able to make outgoing
 connections on port 25 to send messages outside.

 To setup a reverse proxy (or rather Destination NAT, DNAT) for your
-chatmail relay, put the following configuration in
+chatmail relay, follow these instructions:
+
+Linux
+^^^^^
+
+Put the following configuration in
 ``/etc/nftables.conf``:

 ::
@@ -110,5 +115,61 @@ Uncomment in ``/etc/sysctl.conf`` the following two lines:
 Then reboot the relay or do ``sysctl -p`` and
 ``nft -f /etc/nftables.conf``.

-Once proxy relay is set up, you can add its IP address to the DNS.
+FreeBSD / pf
+^^^^^^^^^^^^

+Put the following configuration in
+``/etc/pf.conf``:
+
+::
+
+    ext_if = "em0"
+    forward_ports = "{ 25, 80, 143, 443, 465, 587, 993 }"
+    chatmail_ipv4 = "AAA.BBB.CCC.DDD"
+    icmp_types = "{ echoreq, echorep, unreach, timex }"
+    chatmail_ipv6 = "XXX::1"
+    icmp6_types = "{ echorep, echoreq, neighbradv, neighbrsol, routeradv, routersol, unreach, toobig, timex }"
+
+    set skip on lo0
+
+    nat on $ext_if inet from any to any -> ($ext_if:0)
+    nat on $ext_if inet6 from any to any -> ($ext_if:0)
+
+    # Define the redirect rules
+    rdr on $ext_if inet proto tcp from any to ($ext_if:0) port $forward_ports -> $chatmail_ipv4
+    rdr on $ext_if inet6 proto tcp from any to ($ext_if:0) port $forward_ports -> $chatmail_ipv6
+
+    # Accept the incoming traffic to the specified ports we will NAT redirect
+    pass in quick on $ext_if inet proto tcp from any to any port $forward_ports flags S/SA modulate state
+    pass in quick on $ext_if inet6 proto tcp from any to any port $forward_ports flags S/SA modulate state
+
+    # Allow incoming SSH for host mgmt
+    pass in quick on $ext_if proto tcp from any to ($ext_if) port 22 flags S/SA modulate state
+
+    # Allow ICMP
+    pass in quick on $ext_if inet proto icmp all icmp-type $icmp_types keep state
+    pass in quick on $ext_if inet6 proto ipv6-icmp all icmp6-type $icmp6_types keep state
+
+    # Allow traffic from anyone to go through the NAT
+    pass on $ext_if inet proto tcp from any to $chatmail_ipv4 flags S/SA modulate state
+    pass on $ext_if inet6 proto tcp from any to $chatmail_ipv6 flags S/SA modulate state
+
+    # Default allow out
+    pass out quick on $ext_if from any to any
+
+    # Default block
+    block drop in log all
+
+Insert into ``/etc/sysctl.conf.local`` the following two lines:
+
+::
+
+    net.inet.ip.forwarding=1
+    net.inet6.ip6.forwarding=1
+
+Activate the sysctls with ``service sysctl onestart``.
+Enable the pf firewall with ``service pf enable``.
+Apply the firewall rules with ``service pf start`` or ``pfctl -f /etc/pf.conf``.
+Note, enabling the firewall may interrupt your SSH session, but you can reconnect.
+
+Once proxy relay is set up, you can add its IP address to the DNS.
--- a/www/src/robots.txt
+++ b/www/src/robots.txt
@@ -0,0 +1,2 @@
+User-agent: *
+Disallow: /
Author	SHA1	Message	Date
missytake	296dcad1da	echobot: print invite link with python	2025-12-06 19:08:09 +01:00
Alexandre Gauthier	22c303ed7c	Fix issues with echobot invite link in cmdeploy The entire stack is setup to support 'localhost' as a value for ssh_host, returning LocalExec when that is the case, but this last step made a new explicit SSHExec connection to config.mail_domain. This changes that to simply use the subprocess module when ssh_host is local. This also fixes the issue where the connection was made to 'config.mail_domain' instead of the supplied ssh_host value, ensuring that remains consistent. Additionally, the entire process will be skipped if --dry-run is used with cmdeploy, allowing a dry-run to complete without error.	2025-12-06 19:08:09 +01:00
j4n	166bf68915	Remove DKIM-Signature from incoming mail after checking (#747 ) The original https://github.com/chatmail/relay/pull/533 attempted to remove the header through postfix, but that is too early. Instead, remove the headers in the OpenDKIM `final.lua` script after the validation.	2025-12-04 12:23:27 +01:00
Maikel Frias Mosquea	96108bbaba	fix: cmdeploy webdev now works as intended Before: cmdeploy webdev just kept running non-stop regeneration of the files with this it truly stop unless there's an actual change.	2025-11-25 22:26:47 +01:00
Mark Felder	8f68672e31	FreeBSD/pf example: fix small inconsistency harmless, but better to be consistent	2025-11-21 10:02:44 +01:00
Mark Felder	9e6e3af534	Proxy example for FreeBSD/pf	2025-11-20 17:03:31 +01:00
missytake	fa5a6a64b3	opendkim: use opendkim as selector as before	2025-11-16 19:53:54 +01:00
holger krekel	6b7c002e24	use non-underscore naming for basedeploy helpers	2025-11-16 19:53:54 +01:00
holger krekel	4b2f98788d	remove unneeded __init__ files	2025-11-16 19:53:54 +01:00
holger krekel	13faa42abd	shift mtail deployer to subdir	2025-11-16 19:53:54 +01:00
holger krekel	7c12136991	move out nginx deployer	2025-11-16 19:53:54 +01:00
holger krekel	3637bba5dc	move dovecot deployer out to dovecot/ directory	2025-11-16 19:53:54 +01:00
holger krekel	e2b157bd96	move postfix deployer to postfix directory	2025-11-16 19:53:54 +01:00
holger krekel	83abb3a3e1	factor out opendkim deployer	2025-11-16 19:53:54 +01:00
link2xt	2e3e3101b6	Add robots.txt to exclude all web crawlers	2025-11-16 10:31:14 +00:00
missytake	213d68ed02	acmetool: accept new Let's Encrypt Terms of Services (#729 )	2025-11-16 09:51:39 +01:00
link2xt	68cc6676ef	Update changelog	2025-11-15 10:51:04 +00:00
link2xt	14ca95d25a	fix(postfix): set smtpd_tls_mandatory_protocols for port 25 smtp_tls_mandatory_protocols does not affect port 25 because we require STARTTLS on port 25 since commit `8d7e1dad0e` We don't have any smtpd ports with opportunistic TLS. Submission ports require TLSv1.3 and starting with this commit MX port will require TLSv1.2 instead of TLSv1. I have not managed to connect using TLSv1.1 even without this fix to reproduce the problem, but I have checked that setting `-o smtpd_tls_mandatory_protocols=>=TLSv1.3` does not allow to connect using TLSv1.2 anymore using `openssl s_client -connect example.org:25 -starttls smtp -tls1_2`. `smtpd_tls_protocols` setting is removed because it does not affect anything except the internal ports and its `git blame` points to the wrong commit.	2025-11-15 10:51:04 +00:00
link2xt	3524b055db	fix(postfix): set smtp_tls_mandatory_protocols to require TLSv1.2 for outgoing connections According to <https://www.postfix.org/postconf.5.html#smtp_tls_security_level> for outgoing connections with smtp_tls_security_level `encrypt` and higher (such as `verify` that we currently use) the setting `smtp_tls_mandatory_protocols` is used instead of `smtp_tls_protocols`. According to `postconf -d` (and `postconf` because the default is not changed) current setting value is `smtp_tls_mandatory_protocols = >=TLSv1`. But we only want to connect outside with TLS 1.2 and TLS 1.3. `smtp_tls_protocols` which was already set to `>= TLSv1.2` in commit `0155f32df6` only affected outgoing connections with the `may` level exception set for nauta.cu domain via `smtp_tls_policy_maps` which does not support STARTTLS at all.	2025-11-15 10:51:04 +00:00
holger krekel	7b16f1330d	Update doc/source/overview.rst Co-authored-by: missytake <missytake@systemli.org>	2025-11-13 21:03:54 +01:00
holger krekel	7a907b138c	fix heading	2025-11-13 21:03:54 +01:00
holger krekel	0ff0159a89	update mermaid overview graph	2025-11-13 21:03:54 +01:00
holger krekel	81d2bf89c7	move all cleanup of historic artifacts into LegacyRemoveDeployer	2025-11-13 21:03:30 +01:00
missytake	514a911529	docs: document which services are involved in delivering an internal msg (#678 ) * doc: add diagram for internal message * doc: apostrophe for clarity	2025-11-13 21:02:19 +01:00
holger krekel	fc7240a1ad	simplify importing of resource files (avoid importlib.resources.files boilerplate)	2025-11-13 18:59:03 +01:00
holger krekel	bdcccd858c	add a comment about absolute imports	2025-11-13 18:59:03 +01:00
holger krekel	af30d2b55d	fix import to work with "pyinfra" which needs a file location and thus does not start "run.py" as part of the package	2025-11-13 18:59:03 +01:00
holger krekel	5664b97db4	fixing path resolution for "fmt" command	2025-11-13 18:59:03 +01:00
holger krekel	81364bd523	fix an import	2025-11-13 18:59:03 +01:00
holger krekel	3c3e54fceb	apply results of "cmdeploy fmt"	2025-11-13 18:59:03 +01:00
holger krekel	ae96b752a3	rename "deployer.py" to "basedeploy.py"	2025-11-13 18:59:03 +01:00
holger krekel	33b69fac95	move the monster __init__.py to a deployers.py file	2025-11-13 18:59:03 +01:00
holger krekel	165dc10f59	avoid "deploy.py" next to "deployer.py"	2025-11-13 18:59:03 +01:00
cliffmccarthy	3df3c031d4	Organize cmdeploy into install, configure, and activate stages (#695 ) * refactor: Move all imports to top of cmdeploy/__init__.py * refactor: Move addition of 9.9.9.9 resolver earlier - Moved the "Add 9.9.9.9 to resolv.conf" step earlier, before the creation of users or updates to any config files. This should not affect any of those operations. Moving this step earlier makes it easier to accommodate the restructuring of the deployment process into separate components with separate stages for install, configure, and activate. - Added a Deployer class that defines the base for objects that will handle installation of individual components, with install, configure, and activate stages. - The CMDEPLOY_STAGES environment variable is used to determine what stages to run. If this is not defined, all stages run as usual. - Added import of Deployer to cmdeploy/__init__.py. This is not yet used, but the next series of commits will use it. - In deploy_chatmail(), define an empty list of deployers, and call the create_groups() and create_users() methods for the items in the list. This list will get filled with Deployer objects in the next series of commits. * refactor: Add DovecotDeployer * refactor: Add PostfixDeployer - Removed now-unused 'debug' variable from deploy_chatmail(). * refactor: Add NginxDeployer - Use policy-rc.d during nginx install. This is needed to keep nginx from starting up and interfering with acmetool. For more information see: - https://serverfault.com/questions/861583/how-to-stop-nginx-from-being-automatically-started-on-install - https://major.io/p/install-debian-packages-without-starting-daemons/ - https://people.debian.org/~hmh/invokerc.d-policyrc.d-specification.txt * refactor: Add OpendkimDeployer - Note that this moves the installation of the opendkim package earlier in the deployment sequence. Previously, it was installed during the _configure_opendkim() routine. * refactor: Add UnboundDeployer * refactor: Add IrohDeployer - This splits the existing deploy_iroh_relay() routine into methods for the install, configure, and activate stages. * refactor: Add JournaldDeployer * refactor: Add AcmetoolDeployer - This splits the existing deploy_acmetool() routine into methods for the install, configure, and activate stages. * refactor: Add MtailDeployer - This splits the existing deploy_mtail() routine into methods for the install, configure, and activate stages. * refactor: Add MtastsDeployer - This splits the existing _uninstall_mta_sts_daemon() routine into methods for the configure and activate stages. * refactor: Add RspamdDeployer - This replaces the existing _remove_rspamd() routine with a method for the install stage. * refactor: Split _install_remote_venv_with_chatmaild into stages - Split _install_remote_venv_with_chatmaild() into three routines, to handle the install, configure, and activate stages. - This moves the upload of chatmail.ini later in the deployment process, because it is a configuration file specific to the instance, not software installation that would be uniform across all deployments. * refactor: Add ChatmailVenvDeployer * refactor: Add ChatmailDeployer - This moves the installation of cron earlier in the deployment sequence. * refactor: Add FcgiwrapDeployer * refactor: Add EchobotDeployer - This class is a special case because it has a dependency on the Postfix and Dovecot deployers. When deciding whether to restart the echobot service, it needs to know whether the Postfix and Dovecot deployers restarted their services. To support this dependency, the PostfixDeployer and DovecotDeployer objects are passed to the EchobotDeployer object, so it can check their was_restarted attributes. * refactor: Add WebsiteDeployer - This adds a step to create /var/www in the install stage, because the directory needs to exist for the rsync in the configure stage to work. * refactor: Add TurnDeployer - This splits the existing deploy_turn_server() routine into methods for the install, configure, and activate stages. * refactor: Move curl installation from IrohDeployer to ChatmailDeployer - The 'curl' program is used in TurnDeployer and IrohDeployer, so it makes more sense to install it at the beginning in ChatmailDeployer, rather than have each thing that uses it install it separately. * refactor: Reorder deploy_chatmail() - The previous commits that added Deployer classes mostly kept deployment operations in the same order that they were in before. To organize the process into separate stages for install, configure, and activate, we need to reorder the method calls. This is the commit that does that, and thus this is the commit that has the largest effect on the order of operations. - The calls for the deployer objects are all reordered here so that the methods are called in the same sequence for each stage. This will allow us to collect the calls into loops in the next commit. This commit provides a way to see a diff showing exactly how the sequence changed. - The sequence of deployers was largely based on preserving the order of the "activate" stage, as this seems like the place order might be the most likely to matter. Installation of packages and configuration of files should generally be able to run in any order. (ChatmailDeployer handles updating the apt data, and therefore needs to be first, however.) * refactor: Call install, configure, and activate methods in loops - Revised deploy_chatmail() to use all_deployers to call the install(), configure(), and activate() methods on all the deployers, rather than listing them explicitly in the code. * docs: Add architectural information about deployer classes - Updated overview.rst to describe the Deployer class hierarchy and the motivations behind it. * fix: Block unbound from starting up on install - On an IPv4-only system, if unbound is started but not configured, it causes subsequent steps to fail to resolve hosts. - Revised UnboundDeployer.install_impl() to use policy-rc.d to prevent the service from starting when installed. This is the same mechanism used to keep nginx from starting on install. * feat: Remove obs-home-deltachat.gpg - We don't install Dovecot from OBS anymore. - Removed files.put() that creates /etc/apt/keyrings/obs-home-deltachat.gpg; replaced this with a files.file() that sets present=False to remove the file from any existing installations where it already has been installed. - Removed now-unused obs-home-deltachat.gpg file. - Clarified description of sources.list operation. - Suggested in review by missytake and hpk42. * feat: Reorder deployers - Moved fcgiwrap before nginx. - Exchanged order of turn and unbound. - Moved journald as early as possible. - Suggested in review by missytake. * chore: Add CHANGELOG.md entry for cmdeploy refactor * refactor: Move unit list to ChatmailVenvDeployer - Split _configure_remote_venv_with_chatmaild() into two functions. _configure_remote_venv_with_chatmaild() handles details specific to the "venv", while the new _configure_remote_units() is a more general function that is applicable to several services. - Renamed _activate_remote_venv_with_chatmaild() to _activate_remote_units() because doesn't have anything venv-specific. - Removed list of units from helper functions (where it appeared twice); moved it to ChatmailVenvDeployer, where its is passed as an argument to _configure_remote_units() and _activate_remote_units(). * refactor: Move turnserver out of ChatmailVenvDeployer - Revised TurnDeployer to use _configure_remote_units() and _activate_remote_units(). This class no longer uses need_restart and daemon_reload attributes to keep track of state. The activate stage of ChatmailVenvDeployer was unconditionally restarting the service every time, so we don't need to keep track of extra state in an attempt to avoid restarting it; we can just handle the unconditional restart in TurnDeployer.activate_impl(). - Removed turnserver from the unit list in ChatmailVenvDeployer. * refactor: Move echobot out of ChatmailVenvDeployer - Revised EchobotDeployer to use _configure_remote_units() and _activate_remote_units(). The 'activate' stage of ChatmailVenvDeployer was unconditionally restarting the service every time, so EchobotDeployer no longer needs to depend on the was_restarted attributes of the postfix and dovecot deployers in an attempt to avoid restarting it; we can just handle the unconditional restart in EchobotDeployer.activate_impl(). - Removed echobot from the unit list in ChatmailVenvDeployer. - Removed now-unused was_restarted attribute from PostfixDeployer and DovecotDeployer. * refactor: Move doveauth out of ChatmailVenvDeployer - Revised DovecotDeployer to use _configure_remote_units() and _activate_remote_units() to deploy doveauth. This keeps the Dovecot-related services in a single deployer class, leaving only services that are part of the chatmail project in ChatmailVenvDeployer. - Removed doveauth from the unit list in ChatmailVenvDeployer. * strike unnccessary deployer variables * remove indirection with "stages" * simplify required_users configuration (a method is not needed for now) * further reduce indirections for staged install * now that Deployer class is clean and not mixed with what is in Deployment, use the simpler "install", "configure" and "activate" namings instead of _impl remove static method and Make Deployer instances not set any default state * strike unneccessary ,* argument flexibility * use a Deployer for setting the remote git hash * refactor: Revise AcmetoolDeployer for new Deployer interface * style: Formatting revisions * refactor: Pass all constructor arguments by position - The constructor arguments do not have default values; they are all required. Revised deploy_chatmail() to pass them by position rather than name, so that the caller is not coupled to the names of the arguments inside the method definition. * refactor: Simplify interface to Deployer.install() - In the current code, the only class using the interface that sets need_restart() from the return value of the install() method was IrohDeployer. That interface was created when the install method was a static method, but now it is an instance method with access to 'self'. Therefore, we don't need to pass anything up to the caller to have them set the attribute, we can just set it. - Revised IrohDeployer.install() to set self.need_restart directly, rather than returning a value. - Revised Deployment.install() to ignore the return value of the deployers' install() methods. - need_restart is still present in the base Deployer class to ensure that it is always defined, even when classes do not set it in a constructor. Apart from this initialization for convenience, there is no longer any specific exposure of need_restart in the interface of the Deployer class. - In general, install() methods should use 'self' as little as possible, preferably not at all. In particular, install() methods should never depend on "config" data, such as the config dictionary in self.config or specific values like self.mail_domain. This ensures that these methods can be used to perform generic installation operations that are applicable across multiple relay deployments, and therefore can be called in the process of building a general-purpose container image. * docs: Update cmdeploy architecture details - Revised cmdeploy documentation in doc/source/overview.rst to reflect the recent revisions to the Deployer interface. * docs: Remove section about use of objects --------- Co-authored-by: holger krekel <holger@merlinux.eu>	2025-11-13 16:51:51 +01:00