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0.7.4 - 2026-07-01

Features

  • (logs) Log incoming mailer-daemon message sources (#191)

Miscellaneous Tasks

  • Update filtermail.mtail (#190)

Testing

  • Place #[tokio::test] after rstest case macros (#192)

0.7.3 - 2026-06-27

Features

  • (transport) Worker eviction (#185)

0.7.2 - 2026-06-26

Documentation

  • (readme) Disable colors in mermaid diagrams (#180)
  • (readme) Update Transport mode doc

Features

  • (transport) Destination worker pool

Refactor

  • Implement Display for AddressDomain

Testing

  • Test filtermail-transport

0.7.1 - 2026-06-09

Bug Fixes

  • Switch ratelimiter to MonotonicClock (#167)
  • (smtp-server) Correct error when EOF while reading DATA (#168)
  • (resolver) Disable negative caching (#170)
  • Ignore CNAME records when resolving TXT records (#177)

Features

  • Switch to aws-lc-rs cryptography provider (#178)

Miscellaneous Tasks

  • Add filtermail.mtail so filtermail failures can be monitored (#169)

0.7.0 - 2026-05-26

Bug Fixes

  • Do not crash if accepting new connection fails

Documentation

  • (readme) Remove docs for options removed in da9a116 (#162)

Features

  • [breaking] Remove passthrough options that allowed unencrypted mail to pass

0.6.6 - 2026-05-12

Bug Fixes

  • Return HTTP 200 because madmail expects it, and make sure https is immediately retried when SMTP fails (#153)

Features

  • Improved SMTP error responses (#147)

Miscellaneous Tasks

  • Remove mac and windows from matrix tests (#154)
  • Run cmlxc tests in all classic/classic-ipv4/madmail combinations

0.6.5 - 2026-05-12

Bug Fixes

  • (smtp-client) Handle 421 on reused connection (#145)
  • Advertise 8BITMIME to prevent conversion after DKIM signing (#149)
  • Validate mail data (#150)

Miscellaneous Tasks

  • Build and deploy relays with filtermail binary and run interop tests against madmail (#131)

Performance

  • (smtp-client) Use pipelining if server advertises support (#146)

0.6.4 - 2026-05-01

Bug Fixes

  • Implement missing "implicit MX" rule

Features

  • Https transport channel (#122)

Refactor

  • (transport) Explicitly handle RFC7505 null MX

0.6.3 - 2026-04-20

Features

  • (smtp-server) Log malformed SMTP commands (#118)

Performance

  • (smtp-client) Cache connections (#117)

0.6.2 - 2026-04-16

Documentation

  • (readme) Reformat README.md (#115)

Features

  • Log disabled recipients (#113)
  • (transport) Remote delivery over SMTP (#104)

Miscellaneous Tasks

  • (dependabot) Update configuration (#114)

0.6.1 - 2026-04-01

Documentation

  • (readme) Fix typo (#99)

Features

  • Configurable hosts for listen and reinject (#84)
  • (resolver) Enable DNSSEC (#94)
  • Add experimental option to disable mailboxes (#108)

Refactor

  • Derive Default for Envelope (#100)

0.6.0 - 2026-03-13

Documentation

  • (readme) Fix license link
  • (readme) Clarify licensing of the binaries
  • (readme) Improve README.md (#88)

Features

  • [breaking] Remove IP verification for domain-literals (#90)

Miscellaneous Tasks

  • (ci) Fix binary publish job (#79)

Refactor

  • Use enum for mode cli arg (#83)

0.5.2 - 2026-02-27

Bug Fixes

  • (logs) Log correct address for outbound messages (#70)

Features

  • Check incoming email return address (#72)

Miscellaneous Tasks

  • Bump cargo-dist (#73)
  • (ci) Build and upload binaries in CI (#76)
  • (ci) Add missing Zig dependency (#77)

Refactor

  • Check if email is encrypted before verifying DKIM (#71)

0.5.1 - 2026-02-24

Bug Fixes

  • (dkim) Accept TXT records with no v= tag (#62)
  • (smtp) Properly handle bounce messages (#63)
  • (dkim) Accept TXT records with escaped quotes (#61)
  • (logs) Log From address instead of envelope MAIL FROM. (#66)

0.5.0 - 2026-02-20

Bug Fixes

  • (dkim) Make simple header canonicalization work properly (#53)

Features

  • Save rejected messages to /tmp (#55)

Refactor

  • Do not copy the mail in memory for DKIM verification (#54)

0.4.1 - 2026-02-17

Miscellaneous Tasks

  • (tests) Add a way to disable DKIM for tests (#50)

0.4.0 - 2026-02-17

Features

  • [breaking] DKIM verifier (#35)
  • Support addresses using domain literals (#42)

0.3.0 - 2026-02-14

Features

  • Support legacy, pre-OpenPGP packet format (#44)

Miscellaneous Tasks

  • (dist) Switch to musl targets (#31)

Refactor

  • Remove unnecessary Arc (#36)
  • Use a custom, minimal SMTP client instead of lettre (#33)

0.2.0 - 2026-01-28

Features

  • Configurable rate limiter max burst size (#28)

Performance

  • Disable Nagle's algorithm and do own buffering on server connections

Refactor

  • Remove Mutex around rate limiter

0.1.2 - 2026-01-22

Bug Fixes

  • Set logs required by grafana to INFO (#21)
  • Make inbound/outbound log messages consistent (#23)

Performance

  • Use governor for rate limiting (#20)

0.1.1 - 2026-01-21

Bug Fixes

  • Improve address extraction from SMTP commands (#14)
  • Correct a typo in SMTP answer (#11)
  • (config) Set default values for internal SMTP ports and max message size (#12)

Features

  • Improve logging (#13)

Miscellaneous Tasks

  • (dist) Configure cargo-dist (#10)
  • Configure git-cliff

Refactor

  • Get rid of indexing and slicing in check_armored_payload() (#15)
  • Apply more lints (#17)

0.1.0 - 2026-01-19

Documentation

  • (readme) Add README.md
  • (license) Add LICENSE

Features

  • Initial implementation

Miscellaneous Tasks

  • Init repository
  • (dependabot) Setup dependabot
  • (ci) Setup CI
  • (dependabot) Add github-actions to dependabot
  • (cargo) Add metadata