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Jagoda Estera Ślązak d3f5412420 feat: switch to aws-lc-rs cryptography provider (#178) 
Switches crypto provider to keep
chatmail codebase consistent,
analogous to https://github.com/chatmail/core/pull/8313

Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-06-06 15:28:53 +02:00
dependabot[bot] 73b684f90c chore(deps): Bump log from 0.4.29 to 0.4.30 (#173) 
Bumps [log](https://github.com/rust-lang/log) from 0.4.29 to 0.4.30.
- [Release notes](https://github.com/rust-lang/log/releases)
- [Changelog](https://github.com/rust-lang/log/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/log/compare/0.4.29...0.4.30)

---
updated-dependencies:
- dependency-name: log
  dependency-version: 0.4.30
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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 2026-06-06 10:20:04 +02:00
l fb5a25939c fix: ignore CNAME records when resolving TXT records (#177) 2026-06-06 16:55:18 +09:00
dependabot[bot] 939e5367c9 chore(deps): Bump taiki-e/install-action from 2.79.6 to 2.79.14 
Bumps [taiki-e/install-action](https://github.com/taiki-e/install-action) from 2.79.6 to 2.79.14.
- [Release notes](https://github.com/taiki-e/install-action/releases)
- [Changelog](https://github.com/taiki-e/install-action/blob/main/CHANGELOG.md)
- [Commits](https://github.com/taiki-e/install-action/compare/f48d2f8ba2b452934c948b7be1a768079c3632ff...873c7452cadb7c034694a1282227095d93fbdf92)

---
updated-dependencies:
- dependency-name: taiki-e/install-action
  dependency-version: 2.79.14
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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 2026-06-05 22:51:57 +00:00
dependabot[bot] b0214a71d7 chore(deps): Bump memchr from 2.8.0 to 2.8.1 
Bumps [memchr](https://github.com/BurntSushi/memchr) from 2.8.0 to 2.8.1.
- [Commits](https://github.com/BurntSushi/memchr/compare/2.8.0...2.8.1)

---
updated-dependencies:
- dependency-name: memchr
  dependency-version: 2.8.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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 2026-06-05 22:51:26 +00:00
dependabot[bot] 2538caa1b2 chore(deps): Bump lru from 0.17.0 to 0.18.0 (#171) 
Bumps [lru](https://github.com/jeromefroe/lru-rs) from 0.17.0 to 0.18.0.
- [Changelog](https://github.com/jeromefroe/lru-rs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/jeromefroe/lru-rs/compare/0.17.0...0.18.0)

---
updated-dependencies:
- dependency-name: lru
  dependency-version: 0.18.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
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 2026-06-03 14:57:12 +02:00
dependabot[bot] f82f34d054 chore(deps): Bump tokio from 1.52.1 to 1.52.3 (#172) 
Bumps [tokio](https://github.com/tokio-rs/tokio) from 1.52.1 to 1.52.3.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](https://github.com/tokio-rs/tokio/compare/tokio-1.52.1...tokio-1.52.3)

---
updated-dependencies:
- dependency-name: tokio
  dependency-version: 1.52.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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 2026-06-03 14:56:45 +02:00
Andrey 0xdc09 8a60245183 fix(resolver): disable negative caching (#170) 2026-06-02 12:04:32 +02:00
j4n 6d6517f8f3 chore: add filtermail.mtail so filtermail failures can be monitored (#169) 
Example Prometheus queries:

Outbound errors by reason:
  sum by (reason) (rate(filtermail_transport_error_total[5m]))

filtermail-incoming drops by reason:
  sum by (reason) (rate(filtermail_inbound_drop_total[5m]))
 2026-06-01 21:51:34 +02:00
Jagoda Estera Ślązak e9a63222e6 fix(smtp-server): Correct error when EOF while reading DATA (#168) 
Log
`Unexpected EoF while receiving DATA!`
instead of
`Malformed DATA line without CRLF ending!`

Fixes: #165

Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-06-01 16:27:30 +02:00
dependabot[bot] 893ceab107 chore(deps): Bump taiki-e/install-action from 2.75.28 to 2.79.6 (#164) 
Bumps [taiki-e/install-action](https://github.com/taiki-e/install-action) from 2.75.28 to 2.79.6.
- [Release notes](https://github.com/taiki-e/install-action/releases)
- [Changelog](https://github.com/taiki-e/install-action/blob/main/CHANGELOG.md)
- [Commits](https://github.com/taiki-e/install-action/compare/51cd0b8c0499559d9a4d75c0f5c67bec3a894ec8...f48d2f8ba2b452934c948b7be1a768079c3632ff)

---
updated-dependencies:
- dependency-name: taiki-e/install-action
  dependency-version: 2.79.6
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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 2026-06-01 09:51:57 +02:00
l a6361a2194 fix: switch ratelimiter to MonotonicClock (#167) 
There is a known bug that `quanta` clock
used by default sometimes jumps back:
<https://github.com/metrics-rs/quanta/issues/111>.
This results in `governor` rate limiter
incorrectly rejecting the messages
even when less than the configured burst size
has been sent.

Switched to standard monotonic clock
which does not have this problem.
I tested that this fixed the problem for me,
chatmail relay test `test_exceed_rate_limit`
stopped failing randomly.

Fixes <https://github.com/chatmail/filtermail/issues/166>
 2026-06-01 09:51:33 +02:00
Jagoda Estera Ślązak febfb90510 chore(release): prepare for 0.7.0 (#163) 
Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-05-26 06:56:00 +02:00
Jagoda Estera Ślązak c84a96ac78 docs(readme): Remove docs for options removed in 664ad57 (#162) 2026-05-26 02:25:51 +09:00
link2xt 847e19546b fix: do not crash if accepting new connection fails 
If we run out of file descriptors, we cannot do anything
to accept queued connections, so at least don't crash the process.
Fixes <https://github.com/chatmail/filtermail/issues/139>.
 2026-05-14 20:59:59 +00:00
holger krekel 664ad571b6 feat!: remove passthrough options that allowed unencrypted mail to pass 
see https://github.com/chatmail/relay/pull/970/ for the related removal of chatmail.ini options
 2026-05-14 20:59:13 +02:00
Jagoda Estera Ślązak 91d09ab370 chore(release): prepare for 0.6.6 (#156) 
Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-05-12 13:02:17 +02:00
holger krekel e2be5dc92d ci: run cmlxc tests in all classic/classic-ipv4/madmail combinations 2026-05-12 12:46:20 +02:00
Jagoda Estera Ślązak d74e5b85b3 feat: Improved SMTP error responses (#147) 
Fixes: #140

Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-05-12 12:37:02 +02:00
Jagoda Estera Ślązak b7a213ff1b ci: Remove mac and windows from matrix tests (#154) 
Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-05-12 12:20:25 +02:00
holger krekel 3896044f36 fix: return HTTP 200 because madmail expects it, and make sure https is immediately retried when SMTP fails (#153) 2026-05-12 12:13:00 +02:00
Jagoda Estera Ślązak e26cca0260 chore(release): prepare for 0.6.5 (#152) 
Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-05-12 09:52:13 +02:00
dependabot[bot] 272744115f chore(deps): Bump taiki-e/install-action from 2.75.22 to 2.75.28 (#148) 
Bumps [taiki-e/install-action](https://github.com/taiki-e/install-action) from 2.75.22 to 2.75.28.
- [Release notes](https://github.com/taiki-e/install-action/releases)
- [Changelog](https://github.com/taiki-e/install-action/blob/main/CHANGELOG.md)
- [Commits](https://github.com/taiki-e/install-action/compare/cf525cb33f51aca27cd6fa02034117ab963ff9f1...51cd0b8c0499559d9a4d75c0f5c67bec3a894ec8)

---
updated-dependencies:
- dependency-name: taiki-e/install-action
  dependency-version: 2.75.28
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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 2026-05-12 07:01:30 +02:00
l a65e7a1490 fix: Validate mail data (#150) 
Do not allow bare CR and LF etc.
 2026-05-12 07:00:21 +02:00
holger krekel 36921dd29f fix: advertise 8BITMIME to prevent conversion after DKIM signing (#149) 
for bounces postfix sets Content-Transfer-Encoding: 8bit
which causes a quoted-printable conversion when filtermail SMTP does not offer 8BITMIME,
which in turn breaks DKIM verification.
 2026-05-12 06:56:11 +02:00
Jagoda Estera Ślązak 5295d175d6 perf(smtp-client): Use pipelining if server advertises support (#146) 
Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-05-07 15:05:51 +02:00
Jagoda Estera Ślązak 10119033a3 fix(smtp-client): Handle 421 on reused connection (#145) 
If a reused connection was closed
in the meantime, open a new connection,
instead of failing immediately.

Fixes #143

Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-05-07 14:20:49 +02:00
Jagoda Estera Ślązak d29cbafda4 chore(deps): Upgrade hickory-resolver (#138) 2026-05-05 02:17:21 +02:00
dependabot[bot] bc769e0d2a chore(deps): Bump webpki-roots from 1.0.6 to 1.0.7 (#136) 
Bumps [webpki-roots](https://github.com/rustls/webpki-roots) from 1.0.6 to 1.0.7.
- [Release notes](https://github.com/rustls/webpki-roots/releases)
- [Commits](https://github.com/rustls/webpki-roots/compare/v/1.0.6...v/1.0.7)

---
updated-dependencies:
- dependency-name: webpki-roots
  dependency-version: 1.0.7
  dependency-type: direct:production
  update-type: version-update:semver-patch
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 2026-05-04 12:54:28 +02:00
dependabot[bot] 59944a46ff chore(deps): Bump tokio from 1.51.1 to 1.52.1 (#135) 
Bumps [tokio](https://github.com/tokio-rs/tokio) from 1.51.1 to 1.52.1.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](https://github.com/tokio-rs/tokio/compare/tokio-1.51.1...tokio-1.52.1)

---
updated-dependencies:
- dependency-name: tokio
  dependency-version: 1.52.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
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 2026-05-04 12:52:55 +02:00
dependabot[bot] 457461b4ff chore(deps): Bump lru from 0.16.3 to 0.17.0 (#133) 
Bumps [lru](https://github.com/jeromefroe/lru-rs) from 0.16.3 to 0.17.0.
- [Changelog](https://github.com/jeromefroe/lru-rs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/jeromefroe/lru-rs/compare/0.16.3...0.17.0)

---
updated-dependencies:
- dependency-name: lru
  dependency-version: 0.17.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
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 2026-05-04 09:45:26 +02:00
dependabot[bot] 94dcd6c728 chore(deps): Bump taiki-e/install-action from 2.75.17 to 2.75.22 (#132) 
Bumps [taiki-e/install-action](https://github.com/taiki-e/install-action) from 2.75.17 to 2.75.22.
- [Release notes](https://github.com/taiki-e/install-action/releases)
- [Changelog](https://github.com/taiki-e/install-action/blob/main/CHANGELOG.md)
- [Commits](https://github.com/taiki-e/install-action/compare/58e862542551f667fa44c8a2a4a1d64ad477c96a...cf525cb33f51aca27cd6fa02034117ab963ff9f1)

---
updated-dependencies:
- dependency-name: taiki-e/install-action
  dependency-version: 2.75.22
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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 2026-05-04 09:44:33 +02:00
holger krekel 36ff21ff91 ci: build and deploy relays with filtermail binary and run interop tests against madmail (#131) 
* ci: Run relay integration tests using cmlxc

Builds filtermail and runs cmlxc
tests against a patched chatmail/relay.

Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>

* ci: run integration tests with branch filtermail binary deployed with chatmail/relay main code

---------

Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
Co-authored-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-05-01 17:58:11 +02:00
Jagoda Estera Ślązak 5b79d2d08a chore(release): prepare for 0.6.4 (#130) 
Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-05-01 10:39:46 +02:00
Jagoda Estera Ślązak 0a652e61ee feat: https transport channel (#122) 
Transport mode:
Implements an additional mail delivery
channel over HTTPS.

Incoming mode:
Adds a http server listening for
incoming messages delivered over HTTPS.

Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-05-01 10:30:09 +02:00
Jagoda Ślązak 1b1585eb7d refactor(transport): Explicitly handle RFC7505 null MX 
Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-04-28 08:24:27 +02:00
Jagoda Ślązak 21aaea0d92 fix: Implement missing "implicit MX" rule 
Implements "implicit MX" as described by
https://datatracker.ietf.org/doc/html/rfc5321#section-5.1

Fixes: #126
Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-04-27 14:44:21 +02:00
dependabot[bot] c1a4d99d2e chore(deps): Bump taiki-e/install-action from 2.75.5 to 2.75.17 (#125) 
Bumps [taiki-e/install-action](https://github.com/taiki-e/install-action) from 2.75.5 to 2.75.17.
- [Release notes](https://github.com/taiki-e/install-action/releases)
- [Changelog](https://github.com/taiki-e/install-action/blob/main/CHANGELOG.md)
- [Commits](https://github.com/taiki-e/install-action/compare/7a4939c09608b2a1986b484eca1d16fd0db8ebef...58e862542551f667fa44c8a2a4a1d64ad477c96a)

---
updated-dependencies:
- dependency-name: taiki-e/install-action
  dependency-version: 2.75.17
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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 2026-04-27 10:36:58 +02:00
dependabot[bot] 17ccd3e2ca chore(deps): Bump bnjbvr/cargo-machete from 0.9.1 to 0.9.2 (#124) 
Bumps [bnjbvr/cargo-machete](https://github.com/bnjbvr/cargo-machete) from 0.9.1 to 0.9.2.
- [Release notes](https://github.com/bnjbvr/cargo-machete/releases)
- [Changelog](https://github.com/bnjbvr/cargo-machete/blob/main/CHANGELOG.md)
- [Commits](https://github.com/bnjbvr/cargo-machete/compare/7959c845782fed02ee69303126d4a12d64f1db18...ac30a525c0a8d163a92d727b3ff079ee3f6ecb08)

---
updated-dependencies:
- dependency-name: bnjbvr/cargo-machete
  dependency-version: 0.9.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
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 2026-04-27 10:36:40 +02:00
Jagoda Estera Ślązak 3eb3b86bc9 chore(release): prepare for 0.6.3 (#121) 
Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-04-20 14:09:53 +02:00
Jagoda Estera Ślązak 1e356315da feat(smtp-server): Log malformed SMTP commands (#118) 
Closes #110

Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-04-20 13:03:49 +02:00
dependabot[bot] 0e1b7173ab chore(deps): Bump actions/upload-artifact from 7.0.0 to 7.0.1 (#119) 
Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 7.0.0 to 7.0.1.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](https://github.com/actions/upload-artifact/compare/bbbca2ddaa5d8feaa63e36b76fdaad77386f024f...043fb46d1a93c77aae656e7c1c64a875d1fc6a0a)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-version: 7.0.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
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 2026-04-20 10:39:24 +02:00
dependabot[bot] e156ce9125 chore(deps): Bump taiki-e/install-action from 2.71.2 to 2.75.5 (#120) 
Bumps [taiki-e/install-action](https://github.com/taiki-e/install-action) from 2.71.2 to 2.75.5.
- [Release notes](https://github.com/taiki-e/install-action/releases)
- [Changelog](https://github.com/taiki-e/install-action/blob/main/CHANGELOG.md)
- [Commits](https://github.com/taiki-e/install-action/compare/d858f8113943481093e02986a7586a4819a3bfd6...7a4939c09608b2a1986b484eca1d16fd0db8ebef)

---
updated-dependencies:
- dependency-name: taiki-e/install-action
  dependency-version: 2.75.5
  dependency-type: direct:production
  update-type: version-update:semver-minor
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 2026-04-20 10:39:00 +02:00
Jagoda Estera Ślązak dee00ebdcf perf(smtp-client): Cache connections (#117) 2026-04-17 11:37:05 +02:00
Jagoda Estera Ślązak 45eaa2f659 chore(release): prepare for 0.6.2 (#116) 
Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-04-16 09:25:59 +02:00
Jagoda Estera Ślązak cf64778f71 feat(transport): Remote delivery over SMTP (#104) 
Implements a new mode "transport",
that allows filtermail to be used for
remote delivery.

In transport mode, filtermail listens for LMTP
connections, splits messages by domain
and performs delivery to remote MTAs over SMTP.

SMTP client tries to open socket on all resolved
addresses in parallel and uses one that succeeds
the first, fixing the issue described in:
chatmail/relay#900

Extends the built-in SMTP client
with STARTTLS support.

Extends the built-in SMTP server
with LMTP greeting support.

Groundwork required for mxdeliv endpoint
(HTTP channel for MTA-to-MTA communication):
chatmail/relay#900

Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-04-15 22:12:09 +02:00
Jagoda Estera Ślązak ec0413bd5f feat: Log disabled recipients (#113) 
Logs disabled recipient addresses
when removing them from RCPT TO.

Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-04-15 22:00:42 +02:00
Jagoda Estera Ślązak 2450d1d9c7 docs(readme): Reformat README.md (#115) 
Fixes: #91

Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-04-09 11:27:48 +02:00
Jagoda Estera Ślązak 0feb1371b3 chore(dependabot): Update configuration (#114) 
Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-04-07 13:53:48 +02:00
dependabot[bot] 8ad65923e9 chore(deps): Bump tokio from 1.50.0 to 1.51.0 (#111) 
Bumps [tokio](https://github.com/tokio-rs/tokio) from 1.50.0 to 1.51.0.
- [Release notes](https://github.com/tokio-rs/tokio/releases)
- [Commits](https://github.com/tokio-rs/tokio/compare/tokio-1.50.0...tokio-1.51.0)

---
updated-dependencies:
- dependency-name: tokio
  dependency-version: 1.51.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
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