This was originally based on Jagoda's https://github.com/chatmail/relay/pull/874
but then the postfix config was simplified, and it comes with a simpler and more robust test.
* dovecot: enable login names with square brackets
* config: make IPv4-only relays use self-signed TLS certs
* postfix: make delivery for IP-only relays work
* cmdeploy: skip DNS checks for IPv4 only relays
* www: generate dclogin codes for IPv4-only relays
* opendkim: disable DKIM signing on ipv4-only relays
* get delivery working
* get tests working on IPv4 only machine
* doc: document IPv4-only relays
* dns: warn if mail_domain is an IP, instead of checking DNS
* config: validate domains when formatting them
* ci: add cmlxc testing for no-DNS relays
* ci: run no-dns and normal CI in parallel
* retain "config.mail_domain" as the domain part of @ email addresses, so for ipv4 relays "[1.2.3.4]" and introduce config.ipv4_relay and config.mail_domain_bare helpers.
* ci: migrate from --no-dns to --type ipv4 for cmlxc compatibility
* cleanup dead code, fix docs, fixate cmlxc version
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Co-authored-by: missytake <missytake@systemli.org>
Both dovecot-quota-threshold triggers and the daily expiry routine
will now expunge oldest messages from mailboxes automatically
when the mailbox reaches 75% of max_mailbox_size.
Delta Chat users should not see any warnings (at 80/95 percent) or bounce messages,
and existing over-quota mailboxes should start receiving mails again.
Adds a new tls_external_cert_and_key config option for chatmail servers
that manage their own TLS certificates (e.g. via an external ACME client
or a load balancer).
A systemd path unit (tls-cert-reload.path) watches the certificate file
via inotify and automatically reloads dovecot and nginx when it changes.
Postfix reads certs per TLS handshake so needs no reload.
Also extracts openssl_selfsigned_args() so cert generation parameters
are shared between SelfSignedTlsDeployer and the e2e test.
* cleanup: remove CFFI deltachat bindings usage, and consolidate test support with rpc-bindings
major simplification: all chatmail fixtures used in the test are now created inside the cmdeploy plugin,
and do not inherit anything from other fixture machineries, let alone the legacy deltachat CFFI ones.
also fix that pytest report headers show correct chatmail domains under test
feat: support self-signed TLS via underscore domain convention
Domains starting with "_" (e.g. _chat.example.org) automatically use
self-signed TLS certificates instead of ACME/Let's Encrypt. The TLS
mode is derived from the domain name — no separate config option needed.
Internally, when config.tls_cert_mode is "self" (underscore domain):
- Generate self-signed certificates via openssl
- Set Postfix smtp_tls_security_level to "encrypt" (opportunistic TLS)
- Add smtp_tls_policy_map entry for underscore domains
- Skip ACME, MTA-STS and www CNAME checks in `cmdeploy dns`
- Serve /new via GET (not redirect to dcaccount:) with rate-limiting
(nginx limit_req, 2r/s burst=5)
- Return dclogin: URLs with ic=3 (AcceptInvalidCertificates) from /new
- Render QR codes client-side via JavaScript and qrcode-svg
- Use config.tls_cert_path/tls_key_path in Postfix, Dovecot and nginx
templates instead of hardcoded ACME paths
* docs: update migration guide after nine migration
* use $OLD_IP4 and $NEW_IP4 to make docs more readable. Also streamline "set TTL to 5 minute" phrasing a bit.
* fix tar commands
* refactor: streamline and refactor the migration guide to provide more clarity and focus
* recommend a "higher TTL" concrete value
Co-authored-by: missytake <missytake@systemli.org>
* scriptify another location
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Co-authored-by: missytake <missytake@systemli.org>
refactor README.rst and architecture file into sphinx doc project, automatically deploying on main merges and PRs.
* add FAQs from https://chatmail.at/relays landing page
* fix links, and streamline postfix/dovecot mentioning
* add linkcheck to CI, fix several links and streamlihne DKIM section while at it
* some streamlining, rename to "overview"
* ci: upload documentation to chatmail.at/doc/relay
* ci: main should be uploaded when docs.yaml changes
* ci: fix typo
* Update .github/workflows/docs-preview.yaml
Co-authored-by: missytake <missytake@systemli.org>
* use "relay" instead of "server" and "address" instead of "account"
* consistent Dovecot capitalization and striking relay in two places
* address missytake's comments: use "chatmail relay servers" sometimes -- it's still fine to talk about relays being, or running on, servers
* draft blocking of incoming non-encrypted mail
* create a new enforceE2EE file in address dirs by default and only accept incoming cleartext file if the enforceE2EE file is missing
* Update cmdeploy/src/cmdeploy/service/filtermail.service.f
Co-authored-by: l <link2xt@testrun.org>
* fix benchmark so they setup encryption
* hack around limitations of aiosmtpd's handliung of RCPTO options
* add tests, and split incoming/outgoing handlers for clarity
* document mailbox directory structure, some streamlining of features/E2EE in intro
* use SMTP response code "523 Encryption Needed"
* filtermail: care for the case that the recipient does not exist
Co-authored-by: missytake <missytake@systemli.org>
* Update chatmaild/src/chatmaild/filtermail.py
Co-authored-by: l <link2xt@testrun.org>
* Update chatmaild/src/chatmaild/filtermail.py
Co-authored-by: l <link2xt@testrun.org>
* remove debug info print
* ensure multipart/report type for mailer-daemon messages
* Allow sending out Autocrypt Setup Messages
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Co-authored-by: l <link2xt@testrun.org>
Co-authored-by: missytake <missytake@systemli.org>
* enforce encryption for in-server mails
* make tests work with chatmail server only support e2ee internally
* fix echobot test
* simplify quota-exceeded test
* work around rpc-server fixture changes
holger krekel
