fix off-by-one

fixes silent fail on invalid configuration file.

.github/workflows/ci.yaml

@@ -15,78 +15,28 @@ jobs:
         with:
           ref: ${{ github.event.pull_request.head.sha }}
       - name: download filtermail
-        run: curl -L https://github.com/chatmail/filtermail/releases/download/v0.5.2/filtermail-x86_64 -o /usr/local/bin/filtermail && chmod +x /usr/local/bin/filtermail
-      - name: run chatmaild tests
+        run: curl -L https://github.com/chatmail/filtermail/releases/download/v0.6.0/filtermail-x86_64 -o /usr/local/bin/filtermail && chmod +x /usr/local/bin/filtermail
+      - name: run chatmaild tests 
         working-directory: chatmaild
         run: pipx run tox
 
   scripts:
-    name: deploy-chatmail tests
+    name: deploy-chatmail tests 
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
 
-      - name: initenv
+      - name: initenv 
         run: scripts/initenv.sh
 
       - name: append venv/bin to PATH
         run: echo venv/bin >>$GITHUB_PATH
 
-      - name: run formatting checks
-        run: cmdeploy fmt -v
+      - name: run formatting checks 
+        run: cmdeploy fmt -v 
 
-      - name: run deploy-chatmail offline tests
-        run: pytest --pyargs cmdeploy
+      - name: run deploy-chatmail offline tests 
+        run: pytest --pyargs cmdeploy 
 
-  lxc-test:
-    name: LXC deploy and test
-    runs-on: ubuntu-24.04
-    timeout-minutes: 30
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          ref: ${{ github.event.pull_request.head.sha }}
-
-      - name: install incus
-        run: |
-          # zabbly is the official incus community packages source
-          curl -fsSL https://pkgs.zabbly.com/key.asc \
-            | sudo gpg --dearmor -o /etc/apt/keyrings/zabbly.gpg
-          sudo sh -c 'cat <<EOF > /etc/apt/sources.list.d/zabbly-incus-stable.sources
-          Enabled: yes
-          Types: deb
-          URIs: https://pkgs.zabbly.com/incus/stable
-          Suites: $(. /etc/os-release && echo ${VERSION_CODENAME})
-          Components: main
-          Architectures: $(dpkg --print-architecture)
-          Signed-By: /etc/apt/keyrings/zabbly.gpg
-          EOF'
-          sudo apt-get update
-          sudo apt-get install -y incus
-
-      - name: initialise incus
-        run: |
-          sudo systemctl stop docker.socket docker || true
-          sudo iptables -P FORWARD ACCEPT
-          sudo sysctl -w fs.inotify.max_user_instances=65535
-          sudo sysctl -w fs.inotify.max_user_watches=65535
-          sudo incus admin init --minimal
-          sudo usermod -aG incus-admin "$USER"
-
-      - name: initenv
-        run: scripts/initenv.sh
-
-      - name: append venv/bin to PATH
-        run: echo venv/bin >>$GITHUB_PATH
-
-      - name: lxc-test
-        run: sg incus-admin -c 'cmdeploy lxc-test'
-
-      - name: export images for cache
-        if: always()
-        run: |
-          for alias in localchat-base localchat-ns localchat-test0 localchat-test1; do
-            if ! [ -f /tmp/$alias.tar.gz ]; then
-              sg incus-admin -c "incus image export $alias /tmp/$alias" || true
-            fi
-          done
+      # all other cmdeploy commands require a staging server 
+      # see https://github.com/deltachat/chatmail/issues/100

.github/workflows/staging-ipv4.testrun.org-default.zone

@@ -0,0 +1,20 @@
+;; Zone file for staging-ipv4.testrun.org
+
+$ORIGIN staging-ipv4.testrun.org.
+$TTL 300
+
+@  IN  SOA     ns.testrun.org. root.nine.testrun.org (
+  2023010101 ; Serial
+  7200       ; Refresh
+  3600       ; Retry
+  1209600    ; Expire
+  3600       ; Negative response caching TTL
+)
+
+;; Nameservers.
+@  IN NS ns.testrun.org.
+
+;; DNS records.
+@       IN      A       37.27.95.249
+mta-sts.staging-ipv4.testrun.org.    CNAME   staging-ipv4.testrun.org.
+www.staging-ipv4.testrun.org.        CNAME   staging-ipv4.testrun.org.

.github/workflows/staging.testrun.org-default.zone

@@ -0,0 +1,21 @@
+;; Zone file for staging2.testrun.org
+
+$ORIGIN staging2.testrun.org.
+$TTL 300
+
+@  IN  SOA     ns.testrun.org. root.nine.testrun.org (
+  2023010101 ; Serial
+  7200       ; Refresh
+  3600       ; Retry
+  1209600    ; Expire
+  3600       ; Negative response caching TTL
+)
+
+;; Nameservers.
+@  IN NS ns.testrun.org.
+
+;; DNS records.
+@       IN      A       37.27.24.139
+mta-sts.staging2.testrun.org.    CNAME   staging2.testrun.org.
+www.staging2.testrun.org.        CNAME   staging2.testrun.org.
+

.github/workflows/test-and-deploy-ipv4only.yaml

@@ -0,0 +1,104 @@
+name: deploy on staging-ipv4.testrun.org, and run tests
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    paths-ignore:
+      - 'scripts/**'
+      - '**/README.md'
+      - 'CHANGELOG.md'
+      - 'LICENSE'
+
+jobs:
+  deploy:
+    name: deploy on staging-ipv4.testrun.org, and run tests
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    environment:
+      name: staging-ipv4.testrun.org
+      url: https://staging-ipv4.testrun.org/
+    concurrency: staging-ipv4.testrun.org
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: prepare SSH
+        run: |
+          mkdir ~/.ssh
+          echo "${{ secrets.STAGING_SSH_KEY }}" >> ~/.ssh/id_ed25519
+          chmod 600 ~/.ssh/id_ed25519
+          ssh-keyscan staging-ipv4.testrun.org > ~/.ssh/known_hosts
+          # save previous acme & dkim state
+          rsync -avz root@staging-ipv4.testrun.org:/var/lib/acme acme-ipv4 || true
+          rsync -avz root@staging-ipv4.testrun.org:/etc/dkimkeys dkimkeys-ipv4 || true
+          # store previous acme & dkim state on ns.testrun.org, if it contains useful certs
+          if [ -f dkimkeys-ipv4/dkimkeys/opendkim.private ]; then rsync -avz -e "ssh -o StrictHostKeyChecking=accept-new" dkimkeys-ipv4 root@ns.testrun.org:/tmp/ || true; fi
+          if [ "$(ls -A acme-ipv4/acme/certs)" ]; then rsync -avz -e "ssh -o StrictHostKeyChecking=accept-new" acme-ipv4 root@ns.testrun.org:/tmp/ || true; fi
+          # make sure CAA record isn't set
+          scp -o StrictHostKeyChecking=accept-new .github/workflows/staging-ipv4.testrun.org-default.zone root@ns.testrun.org:/etc/nsd/staging-ipv4.testrun.org.zone
+          ssh root@ns.testrun.org sed -i '/CAA/d' /etc/nsd/staging-ipv4.testrun.org.zone
+          ssh root@ns.testrun.org nsd-checkzone staging-ipv4.testrun.org /etc/nsd/staging-ipv4.testrun.org.zone
+          ssh root@ns.testrun.org systemctl reload nsd
+
+      - name: rebuild staging-ipv4.testrun.org to have a clean VPS
+        run: |
+            curl -X POST \
+            -H "Authorization: Bearer ${{ secrets.HETZNER_API_TOKEN }}" \
+            -H "Content-Type: application/json" \
+            -d '{"image":"debian-12"}' \
+            "https://api.hetzner.cloud/v1/servers/${{ secrets.STAGING_IPV4_SERVER_ID }}/actions/rebuild"
+
+      - run: scripts/initenv.sh
+
+      - name: append venv/bin to PATH
+        run: echo venv/bin >>$GITHUB_PATH
+
+      - name: upload TLS cert after rebuilding
+        run: |
+          echo " --- wait until staging-ipv4.testrun.org VPS is rebuilt --- "
+          rm ~/.ssh/known_hosts
+          while ! ssh -o ConnectTimeout=180 -o StrictHostKeyChecking=accept-new -v root@staging-ipv4.testrun.org id -u ; do sleep 1 ; done
+          ssh -o StrictHostKeyChecking=accept-new -v root@staging-ipv4.testrun.org id -u
+          # download acme & dkim state from ns.testrun.org
+          rsync -e "ssh -o StrictHostKeyChecking=accept-new" -avz root@ns.testrun.org:/tmp/acme-ipv4/acme acme-restore || true
+          rsync -avz root@ns.testrun.org:/tmp/dkimkeys-ipv4/dkimkeys dkimkeys-restore || true
+          # restore acme & dkim state to staging2.testrun.org
+          rsync -avz acme-restore/acme root@staging-ipv4.testrun.org:/var/lib/ || true
+          rsync -avz dkimkeys-restore/dkimkeys root@staging-ipv4.testrun.org:/etc/ || true
+          ssh -o StrictHostKeyChecking=accept-new -v root@staging-ipv4.testrun.org chown root:root -R /var/lib/acme || true
+
+      - name: run deploy-chatmail offline tests 
+        run: pytest --pyargs cmdeploy 
+
+      - name: setup dependencies
+        run: |
+          ssh root@staging-ipv4.testrun.org apt update
+          ssh root@staging-ipv4.testrun.org apt install -y git python3.11-venv python3-dev gcc
+          ssh root@staging-ipv4.testrun.org git clone https://github.com/chatmail/relay
+          ssh root@staging-ipv4.testrun.org "cd relay && git checkout " ${{ github.head_ref }}
+          ssh root@staging-ipv4.testrun.org "cd relay && scripts/initenv.sh"
+
+      - name: initialize config
+        run: |
+          ssh root@staging-ipv4.testrun.org "cd relay && scripts/cmdeploy init staging-ipv4.testrun.org"
+          ssh root@staging-ipv4.testrun.org "sed -i 's#disable_ipv6 = False#disable_ipv6 = True#' relay/chatmail.ini"
+          ssh root@staging-ipv4.testrun.org "sed -i 's/#\s*mtail_address/mtail_address/' relay/chatmail.ini"
+
+      - run: ssh root@staging-ipv4.testrun.org "cd relay && scripts/cmdeploy run --verbose --skip-dns-check --ssh-host localhost"
+
+      - name: set DNS entries
+        run: |
+          ssh root@staging-ipv4.testrun.org "cd relay && scripts/cmdeploy dns --zonefile staging-generated.zone --ssh-host localhost"
+          ssh root@staging-ipv4.testrun.org cat relay/staging-generated.zone >> .github/workflows/staging-ipv4.testrun.org-default.zone
+          cat .github/workflows/staging-ipv4.testrun.org-default.zone
+          scp .github/workflows/staging-ipv4.testrun.org-default.zone root@ns.testrun.org:/etc/nsd/staging-ipv4.testrun.org.zone
+          ssh root@ns.testrun.org nsd-checkzone staging-ipv4.testrun.org /etc/nsd/staging-ipv4.testrun.org.zone
+          ssh root@ns.testrun.org systemctl reload nsd
+
+      - name: cmdeploy test
+        run: ssh root@staging-ipv4.testrun.org "cd relay && CHATMAIL_DOMAIN2=ci-chatmail.testrun.org scripts/cmdeploy test --slow --ssh-host localhost"
+
+      - name: cmdeploy dns
+        run: ssh root@staging-ipv4.testrun.org "cd relay && scripts/cmdeploy dns -v --ssh-host localhost"
+

.github/workflows/test-and-deploy.yaml

@@ -0,0 +1,97 @@
+name: deploy on staging2.testrun.org, and run tests
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    paths-ignore:
+      - 'scripts/**'
+      - '**/README.md'
+      - 'CHANGELOG.md'
+      - 'LICENSE'
+
+jobs:
+  deploy:
+    name: deploy on staging2.testrun.org, and run tests
+    runs-on: ubuntu-latest
+    timeout-minutes: 30
+    environment:
+      name: staging2.testrun.org
+      url: https://staging2.testrun.org/
+    concurrency: staging2.testrun.org
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: prepare SSH
+        run: |
+          mkdir ~/.ssh
+          echo "${{ secrets.STAGING_SSH_KEY }}" >> ~/.ssh/id_ed25519
+          chmod 600 ~/.ssh/id_ed25519
+          ssh-keyscan staging2.testrun.org > ~/.ssh/known_hosts
+          # save previous acme & dkim state
+          rsync -avz root@staging2.testrun.org:/var/lib/acme . || true
+          rsync -avz root@staging2.testrun.org:/etc/dkimkeys . || true
+          # store previous acme & dkim state on ns.testrun.org, if it contains useful certs
+          if [ -f dkimkeys/opendkim.private ]; then rsync -avz -e "ssh -o StrictHostKeyChecking=accept-new" dkimkeys root@ns.testrun.org:/tmp/ || true; fi
+          if [ "$(ls -A acme/certs)" ]; then rsync -avz -e "ssh -o StrictHostKeyChecking=accept-new" acme root@ns.testrun.org:/tmp/ || true; fi
+          # make sure CAA record isn't set
+          scp -o StrictHostKeyChecking=accept-new .github/workflows/staging.testrun.org-default.zone root@ns.testrun.org:/etc/nsd/staging2.testrun.org.zone
+          ssh root@ns.testrun.org sed -i '/CAA/d' /etc/nsd/staging2.testrun.org.zone
+          ssh root@ns.testrun.org nsd-checkzone staging2.testrun.org /etc/nsd/staging2.testrun.org.zone
+          ssh root@ns.testrun.org systemctl reload nsd
+
+      - name: rebuild staging2.testrun.org to have a clean VPS
+        run: |
+            curl -X POST \
+            -H "Authorization: Bearer ${{ secrets.HETZNER_API_TOKEN }}" \
+            -H "Content-Type: application/json" \
+            -d '{"image":"debian-12"}' \
+            "https://api.hetzner.cloud/v1/servers/${{ secrets.STAGING_SERVER_ID }}/actions/rebuild"
+
+      - run: scripts/initenv.sh
+
+      - name: append venv/bin to PATH
+        run: echo venv/bin >>$GITHUB_PATH
+
+      - name: upload TLS cert after rebuilding
+        run: |
+          echo " --- wait until staging2.testrun.org VPS is rebuilt --- "
+          rm ~/.ssh/known_hosts
+          while ! ssh -o ConnectTimeout=180 -o StrictHostKeyChecking=accept-new -v root@staging2.testrun.org id -u ; do sleep 1 ; done
+          ssh -o StrictHostKeyChecking=accept-new -v root@staging2.testrun.org id -u
+          # download acme & dkim state from ns.testrun.org
+          rsync -e "ssh -o StrictHostKeyChecking=accept-new" -avz root@ns.testrun.org:/tmp/acme acme-restore || true
+          rsync -avz root@ns.testrun.org:/tmp/dkimkeys dkimkeys-restore || true
+          # restore acme & dkim state to staging2.testrun.org
+          rsync -avz acme-restore/acme root@staging2.testrun.org:/var/lib/ || true
+          rsync -avz dkimkeys-restore/dkimkeys root@staging2.testrun.org:/etc/ || true
+          ssh -o StrictHostKeyChecking=accept-new -v root@staging2.testrun.org chown root:root -R /var/lib/acme || true
+
+      - name: add hpk42 key to staging server
+        run: ssh root@staging2.testrun.org 'curl -s https://github.com/hpk42.keys >> .ssh/authorized_keys'
+
+      - name: run deploy-chatmail offline tests 
+        run: pytest --pyargs cmdeploy 
+
+      - run: |
+          cmdeploy init staging2.testrun.org
+          sed -i 's/#\s*mtail_address/mtail_address/' chatmail.ini
+
+      - run: cmdeploy run --verbose --skip-dns-check
+
+      - name: set DNS entries
+        run: |
+          cmdeploy dns --zonefile staging-generated.zone --verbose
+          cat staging-generated.zone >> .github/workflows/staging.testrun.org-default.zone
+          cat .github/workflows/staging.testrun.org-default.zone
+          scp .github/workflows/staging.testrun.org-default.zone root@ns.testrun.org:/etc/nsd/staging2.testrun.org.zone
+          ssh root@ns.testrun.org nsd-checkzone staging2.testrun.org /etc/nsd/staging2.testrun.org.zone
+          ssh root@ns.testrun.org systemctl reload nsd
+
+      - name: cmdeploy test
+        run: CHATMAIL_DOMAIN2=ci-chatmail.testrun.org cmdeploy test --slow
+
+      - name: cmdeploy dns
+        run: cmdeploy dns -v
+

cmdeploy/src/cmdeploy/cmdeploy.py

@@ -437,7 +437,7 @@ def main(args=None):
     if args.func is None:
         return parser.parse_args(["-h"])
 
-    out = Out(sepchar="\u2501", verbosity=args.verbose)
+    out = Out(verbosity=args.verbose)
     kwargs = {}
 
     if args.inipath is not None and args.func.__name__ not in ("init_cmd", "fmt_cmd"):

cmdeploy/src/cmdeploy/deployers.py

@@ -463,8 +463,9 @@ class ChatmailDeployer(Deployer):
         ("iroh", None, None),
     ]
 
-    def __init__(self, mail_domain):
-        self.mail_domain = mail_domain
+    def __init__(self, config):
+        self.config = config
+        self.mail_domain = config.mail_domain
 
     def install(self):
         files.put(
@@ -493,6 +494,17 @@ class ChatmailDeployer(Deployer):
         )
 
     def configure(self):
+        # Ensure the per-domain mailbox directory exists before
+        # chatmail-metadata starts (it crashes without it).
+        files.directory(
+            name="Ensure vmail mailbox directory exists",
+            path=f"/home/vmail/mail/{self.mail_domain}",
+            user="vmail",
+            group="vmail",
+            mode="700",
+            present=True,
+        )
+
         # This file is used by auth proxy.
         # https://wiki.debian.org/EtcMailName
         server.shell(
@@ -502,6 +514,15 @@ class ChatmailDeployer(Deployer):
             ],
         )
 
+        files.directory(
+            name=f"Ensure mailboxes directory {self.config.mailboxes_dir} exists",
+            path=str(self.config.mailboxes_dir),
+            user="vmail",
+            group="vmail",
+            mode="700",
+            present=True,
+        )
+
 
 class FcgiwrapDeployer(Deployer):
     def install(self):
@@ -620,7 +641,7 @@ def deploy_chatmail(config_path: Path, disable_mail: bool, website_only: bool) -
     tls_deployer = get_tls_deployer(config, mail_domain)
 
     all_deployers = [
-        ChatmailDeployer(mail_domain),
+        ChatmailDeployer(config),
         LegacyRemoveDeployer(),
         FiltermailDeployer(),
         JournaldDeployer(),

cmdeploy/src/cmdeploy/dovecot/deployer.py

@@ -145,7 +145,7 @@ def _configure_dovecot(config: Config, debug: bool = False) -> (bool, bool):
         if not can_modify:
             print(
                 "\n!!!! refusing to attempt sysctl setting in shared-kernel containers\n"
-                f"!!!! dovecot: sysctl {key!r}={value}, should be >65535 for production setups\n"
+                f"!!!! dovecot: sysctl {key!r}={value}, should be >65534 for production setups\n"
                 "!!!!"
             )
             continue

cmdeploy/src/cmdeploy/filtermail/deployer.py

@@ -14,10 +14,10 @@ class FiltermailDeployer(Deployer):
 
     def install(self):
         arch = host.get_fact(facts.server.Arch)
-        url = f"https://github.com/chatmail/filtermail/releases/download/v0.5.2/filtermail-{arch}"
+        url = f"https://github.com/chatmail/filtermail/releases/download/v0.6.0/filtermail-{arch}"
         sha256sum = {
-            "x86_64": "ce24ca0075aa445510291d775fb3aea8f4411818c7b885ae51a0fe18c5f789ce",
-            "aarch64": "c5d783eefa5332db3d97a0e6a23917d72849e3eb45da3d16ce908a9b4e5a797d",
+            "x86_64": "3fd8b18282252c75a5bbfa603d8c1b65f6563e5e920bddf3e64e451b7cdb43ce",
+            "aarch64": "2bd191de205f7fd60158dd8e3516ab7e3efb14627696f3d7dc186bdcd9e10a43",
         }[arch]
         self.need_restart |= files.download(
             name="Download filtermail",

cmdeploy/src/cmdeploy/lxc/cli.py

@@ -114,7 +114,7 @@ def _lxc_start_cmd(args, out):
         )
         sub.green(f"    Include {ssh_cfg}")
 
-    # Optionally run cmdeploy run on each relay
+    # Optionally run cmdeploy run + dns on each relay
     if args.run:
         for ct in relays:
             with out.section(f"cmdeploy run: {ct.sname} ({ct.domain})"):
@@ -123,6 +123,20 @@ def _lxc_start_cmd(args, out):
                     out.red(f"Deploy to {ct.sname} failed (exit {ret})")
                     return ret
 
+        with out.section("loading DNS zones"):
+            for ct in relays:
+                ret = _run_cmdeploy(
+                    "dns", ct, ix, out,
+                    extra=["--zonefile", str(ct.zone)],
+                )
+                if ret:
+                    out.red(f"DNS for {ct.sname} failed (exit {ret})")
+                    return ret
+                if ct.zone.exists():
+                    dns_ct.set_dns_records(ct.zone.read_text())
+                out.print(f"Restarting filtermail-incoming on {ct.name}")
+                ct.bash("systemctl restart filtermail-incoming")
+
 
 # -------------------------------------------------------------------
 # lxc-stop
@@ -247,6 +261,13 @@ def lxc_test_cmd(args, out):
                 out.print(f"Loading {ct.zone} into PowerDNS ...")
                 dns_ct.set_dns_records(zone_data)
 
+        # Restart filtermail so its in-process DNS cache
+        # does not hold stale negative DKIM responses
+        # from before the zones were loaded.
+        for ct in map(ix.get_container, relay_names):
+            out.print(f"Restarting filtermail-incoming on {ct.name} ...")
+            ct.bash("systemctl restart filtermail-incoming")
+
     with out.section("cmdeploy test"):
         first = ix.get_container(relay_names[0])
         env = None

cmdeploy/src/cmdeploy/lxc/incus.py

@@ -99,6 +99,22 @@ class Incus:
         target = f"include {self.ssh_config_path}".lower()
         return any(line.strip().lower() == target for line in lines)
 
+    def get_host_nameservers(self):
+        """Return upstream nameservers found on the host."""
+        ns = []
+        for path in ["/run/systemd/resolve/resolv.conf", "/etc/resolv.conf"]:
+            p = Path(path)
+            if p.exists():
+                for line in p.read_text().splitlines():
+                    if line.strip().startswith("nameserver "):
+                        addr = line.split()[1]
+                        if addr not in ("127.0.0.1", "127.0.0.53", "::1"):
+                            if addr not in ns:
+                                ns.append(addr)
+                if ns:
+                    break
+        return ns
+
     def run(self, args, check=True, capture=True, input=None):
         """Run an incus command.
 
@@ -106,7 +122,7 @@ class Incus:
         to the terminal line-by-line while also being captured for
         later return via result.stdout.
         """
-        cmd = ["incus"] + list(args)
+        cmd = ["incus", "--quiet"] + list(args)
         sub = self.out.new_prefixed_out("  ")
 
         if not capture:
@@ -128,9 +144,9 @@ class Incus:
         proc = subprocess.Popen(
             cmd,
             text=True,
-            stdin=subprocess.PIPE if input else None,
+            stdin=subprocess.PIPE if input else subprocess.DEVNULL,
             stdout=subprocess.PIPE,
-            stderr=subprocess.STDOUT,
+            stderr=subprocess.PIPE,
         )
 
         stdout_lines = []
@@ -143,15 +159,17 @@ class Incus:
             if sub.verbosity >= 2:
                 sub.print(f"  > {line.rstrip()}")
 
+        stderr = proc.stderr.read()
         ret = proc.wait()
         stdout = "".join(stdout_lines)
         if check and ret != 0:
-            for line in stdout.splitlines():
+            full_output = stdout + stderr
+            for line in full_output.splitlines():
                 if sub.verbosity < 1:  # and we haven't printed it yet
                     sub.red(line)
-            raise subprocess.CalledProcessError(ret, cmd, output=stdout)
+            raise subprocess.CalledProcessError(ret, cmd, output=stdout, stderr=stderr)
 
-        return subprocess.CompletedProcess(cmd, ret, stdout=stdout)
+        return subprocess.CompletedProcess(cmd, ret, stdout=stdout, stderr=stderr)
 
     def run_json(self, args, check=True):
         """Run an incus command with ``--format=json``.
@@ -241,8 +259,10 @@ class Incus:
 
         key_path = self.ssh_key_path
         pub_key = key_path.with_suffix(".pub").read_text().strip()
+        host_ns = self.get_host_nameservers()
+        ns_lines = "\n".join(f"nameserver {n}" for n in host_ns)
         ct.bash(f"""
-            echo 'nameserver 9.9.9.9' > /etc/resolv.conf
+            printf '{ns_lines}\n' > /etc/resolv.conf
             apt-get -o DPkg::Lock::Timeout=60 update
             DEBIAN_FRONTEND=noninteractive apt-get install -y openssh-server python3
             systemctl enable ssh
@@ -279,12 +299,11 @@ class Incus:
 class Container:
     """The base container handle wraps all interactions with incus."""
 
-    def __init__(self, incus, name, domain=None, memory="200MiB"):
+    def __init__(self, incus, name, domain=None):
         self.incus = incus
         self.out = incus.out
         self.name = name
         self.domain = domain or f"{name}{DOMAIN_SUFFIX}"
-        self.memory = memory
         self.ipv4 = None
         self.ipv6 = None
 
@@ -329,7 +348,6 @@ class Container:
         cfg = []
         cfg += ("-c", f"{LABEL_KEY}=true")
         cfg += ("-c", f"user.localchat-domain={self.domain}")
-        cfg += ("-c", f"limits.memory={self.memory}")
         self.incus.run(["launch", image, self.name, *cfg])
         return image
 
@@ -414,7 +432,6 @@ class RelayContainer(Container):
             incus,
             f"{name}-localchat",
             domain=f"_{name}{DOMAIN_SUFFIX}",
-            memory="600MiB",
         )
         self.sname = name
         self.ini = incus.lxconfigs_dir / f"chatmail-{name}.ini"
@@ -439,11 +456,14 @@ class RelayContainer(Container):
         self.bash("""
             sysctl -w net.ipv6.conf.all.disable_ipv6=1
             sysctl -w net.ipv6.conf.default.disable_ipv6=1
-            mkdir -p /etc/sysctl.d
-            printf 'net.ipv6.conf.all.disable_ipv6=1\\n
-            net.ipv6.conf.default.disable_ipv6=1\\n'
-            > /etc/sysctl.d/99-disable-ipv6.conf
         """)
+        self.push_file_content(
+            "/etc/sysctl.d/99-disable-ipv6.conf",
+            """
+            net.ipv6.conf.all.disable_ipv6=1
+            net.ipv6.conf.default.disable_ipv6=1
+            """,
+        )
 
     def configure_hosts(self, ip):
         """Set hostname and /etc/hosts inside the container."""
@@ -483,22 +503,29 @@ class RelayContainer(Container):
 
     def verify_ssh(self, ssh_config):
         """Verify SSH connectivity to this container."""
-        cmd = f"ssh -F {ssh_config} -o ConnectTimeout=10 root@{self.domain} hostname"
-        return shell(cmd, timeout=15).returncode == 0
+        cmd = f"ssh -F {ssh_config} -o ConnectTimeout=60 root@{self.domain} hostname"
+        return shell(cmd, timeout=60).returncode == 0
 
     def configure_dns(self, dns_ip):
         """Point this container's resolver at *dns_ip* and verify DNS is reachable."""
         self.bash(f"""
             systemctl disable --now systemd-resolved 2>/dev/null || true
             rm -f /etc/resolv.conf
-            echo 'nameserver {dns_ip}' > /etc/resolv.conf
+            printf 'nameserver {dns_ip}\\n' >/etc/resolv.conf
             mkdir -p /etc/unbound/unbound.conf.d
-            printf 'server:\\n  domain-insecure: "localchat"\\n\\n
-            forward-zone:\\n  name: "localchat"\\n
-              forward-addr: {dns_ip}\\n'
-            > /etc/unbound/unbound.conf.d/localchat-forward.conf
-            systemctl restart unbound 2>/dev/null || true
         """)
+        self.push_file_content(
+            "/etc/unbound/unbound.conf.d/localchat-forward.conf",
+            f"""
+            server:
+              domain-insecure: "localchat"
+
+            forward-zone:
+              name: "localchat"
+              forward-addr: {dns_ip}
+            """,
+        )
+        self.bash("systemctl restart unbound 2>/dev/null || true")
         self._wait_dns_reachable(dns_ip)
 
     def _wait_dns_reachable(self, dns_ip, timeout=10):
@@ -562,7 +589,7 @@ class DNSContainer(Container):
         """)
         self._wait_dns_ready()
 
-    def _wait_dns_ready(self, timeout=10):
+    def _wait_dns_ready(self, timeout=60):
         """Poll until the recursor answers a query on port 53."""
         deadline = time.time() + timeout
         while time.time() < deadline:
@@ -604,10 +631,13 @@ class DNSContainer(Container):
         if self.run_cmd("which", "pdns_server", check=False) is not None:
             return
 
-        self.bash("""
+        host_ns = self.incus.get_host_nameservers()
+        ns_lines = "\n".join(f"nameserver {n}" for n in host_ns)
+
+        self.bash(f"""
             systemctl disable --now systemd-resolved 2>/dev/null || true
             rm -f /etc/resolv.conf
-            echo 'nameserver 9.9.9.9' > /etc/resolv.conf
+            printf '{ns_lines}\n' > /etc/resolv.conf
 
             # Block automatic service startup during package installation
             printf '#!/bin/sh\\nexit 101\\n' > /usr/sbin/policy-rc.d
@@ -643,7 +673,6 @@ class DNSContainer(Container):
             local-address=0.0.0.0
             local-port=53
             forward-zones=localchat=127.0.0.1:5353
-            forward-zones-recurse=.=9.9.9.9;149.112.112.112
             allow-from=0.0.0.0/0
             dont-query=
             dnssec=off

cmdeploy/src/cmdeploy/tests/online/test_0_login.py

@@ -89,7 +89,9 @@ def test_concurrent_logins_same_account(
         assert login_results.get()
 
 
-def test_no_vrfy(chatmail_config):
+def test_no_vrfy(cmfactory, chatmail_config):
+    ac = cmfactory.get_online_account()
+    addr = ac.get_config("addr")
     domain = chatmail_config.mail_domain
 
     s = smtplib.SMTP(domain)
@@ -98,7 +100,7 @@ def test_no_vrfy(chatmail_config):
     s.putcmd("vrfy", f"wrongaddress@{chatmail_config.mail_domain}")
     result = s.getreply()
     print(result)
-    s.putcmd("vrfy", f"echo@{chatmail_config.mail_domain}")
+    s.putcmd("vrfy", addr)
     result2 = s.getreply()
     print(result2)
     assert result[0] == result2[0] == 252

cmdeploy/src/cmdeploy/tests/plugin.py

@@ -487,13 +487,16 @@ def cmfactory(
 
 @pytest.fixture
 def remote(sshdomain, pytestconfig):
-    return Remote(sshdomain, ssh_config=pytestconfig.getoption("ssh_config"))
+    r = Remote(sshdomain, ssh_config=pytestconfig.getoption("ssh_config"))
+    yield r
+    r.close()
 
 
 class Remote:
     def __init__(self, sshdomain, ssh_config=None):
         self.sshdomain = sshdomain
         self.ssh_config = ssh_config
+        self._procs = []
 
     def iter_output(self, logcmd="", ready=None):
         getjournal = "journalctl -f" if not logcmd else logcmd
@@ -509,12 +512,15 @@ class Remote:
                     command.extend(["-F", self.ssh_config])
                 command.append(f"root@{self.sshdomain}")
         [command.append(arg) for arg in getjournal.split()]
-        self.popen = subprocess.Popen(
+        popen = subprocess.Popen(
             command,
+            stdin=subprocess.DEVNULL,
             stdout=subprocess.PIPE,
+            stderr=subprocess.DEVNULL,
         )
+        self._procs.append(popen)
         while 1:
-            line = self.popen.stdout.readline()
+            line = popen.stdout.readline()
             res = line.decode().strip().lower()
             if not res:
                 break
@@ -523,6 +529,12 @@ class Remote:
                 ready = None
             yield res
 
+    def close(self):
+        while self._procs:
+            proc = self._procs.pop()
+            proc.kill()
+            proc.wait()
+
 
 @pytest.fixture
 def lp(request):

cmdeploy/src/cmdeploy/util.py

@@ -15,10 +15,10 @@ from termcolor import colored
 class Out:
     """Convenience output printer providing coloring and section formatting."""
 
-    def __init__(self, sepchar="\u2501", prefix="", verbosity=0):
+    def __init__(self, prefix="", verbosity=0):
         self.section_timings = []
         self.prefix = prefix
-        self.sepchar = sepchar
+        self.sepchar = "\u2501"
         self.verbosity = verbosity
         env_width = os.environ.get("_CMDEPLOY_WIDTH")
         if env_width:
@@ -31,7 +31,6 @@ class Out:
         sharing section_timings with the parent.
         """
         out = Out(
-            sepchar=self.sepchar,
             prefix=self.prefix + newprefix,
             verbosity=self.verbosity,
         )
@@ -90,6 +89,7 @@ class Out:
             cmd,
             shell=True,
             text=True,
+            stdin=subprocess.DEVNULL,
             stdout=subprocess.PIPE,
             stderr=subprocess.STDOUT,
             env=env,
@@ -133,6 +133,7 @@ def shell(cmd, check=False, **kwargs):
     """
     if "capture_output" not in kwargs and "stdout" not in kwargs:
         kwargs["capture_output"] = True
+    kwargs.setdefault("stdin", subprocess.DEVNULL)
     return subprocess.run(collapse(cmd), shell=True, text=True, check=check, **kwargs)
 
 

doc/source/lxc.rst

@@ -176,7 +176,7 @@ running two `PowerDNS <https://www.powerdns.com/>`_ services:
 * **pdns-recursor** (recursive) listens on the Incus
   bridge so all containers can use it.
   Forwards ``.localchat`` queries to the local
-  authoritative server and everything else to Quad9 (``9.9.9.9``).
+  authoritative server and resolves everything else recursively.
 
 After the DNS container is up, ``lxc-start`` configures the Incus bridge
 to advertise its IP via DHCP and disables Incus's own DNS.