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13 Commits
Author SHA1 Message Date
Jagoda Estera ŚlązakandGitHub 82618de311 feat: Check incoming email return address (#72) 
If the MAIL FROM doesn't match the From header,
we do not reject the mail, as this can be caused
by e.g. SRS forwarding. Instead, we reset the envelope
address, so it is reinjected as `MAIL FROM:<>`
to prevent sending a bounce message.

Closes #67

Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-02-25 16:20:08 +01:00
Jagoda Estera ŚlązakandGitHub 2e1c38466c fix(logs): Log correct address for outbound messages (#70) 
Fixes #68

Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-02-25 16:08:41 +01:00
Jagoda Estera ŚlązakandGitHub e1841cb590 fix(logs): Log From address instead of envelope MAIL FROM. (#66) 
Fixes #64

Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-02-24 11:58:28 +01:00
Jagoda Estera ŚlązakandGitHub a096d0550f feat!: DKIM verifier (#35) 
* feat!: DKIM verifier

This implements a DKIM verification as well as a strict
DKIM signature alignment check with domain in `From`
header address.

Caches the retrieved RDATA using in-memory LRU.

BREAKING CHANGE: incoming messages now require DKIM signatures
  aligned to domain of the `From` header address.

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

* chore(license): License binaries under GPLv3

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

---------

Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-02-16 09:50:55 +01:00
Jagoda Estera ŚlązakandGitHub 0ee1e9924c refactor: Use a custom, minimal SMTP client instead of lettre (#33) 
This disables the Nagle's algorithm on re-insertion.

Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-02-06 11:15:14 +01:00
Jagoda Estera ŚlązakandGitHub 8d18b73681 refactor: Remove unnecessary Arc (#36) 
`Arc` around handler configs are not needed,
as they are not shared.

Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-02-05 16:42:06 +01:00
Jagoda Estera ŚlązakandGitHub 23231d462c feat: Configurable rate limiter max burst size (#28) 
Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-01-28 17:47:48 +01:00
link2xt aa5999cc25 refactor: remove Mutex around rate limiter 
Rate limiter handles all the necessary locking internally.
 2026-01-26 17:59:12 +00:00
Jagoda Estera ŚlązakandGitHub ca6ccd9acf fix: Set logs required by grafana to INFO (#21) 
Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-01-22 14:49:55 +01:00
Jagoda Estera ŚlązakandGitHub b5a56a6a4e perf: Use governor for rate limiting (#20) 
Fixes: #19

Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-01-22 14:49:26 +01:00
Jagoda Estera ŚlązakandGitHub 9eb86b23ce refactor: Apply more lints (#17) 
Sets lint rules and applies required changes.

Fixes: #16

Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-01-21 16:28:24 +01:00
Jagoda Estera ŚlązakandGitHub aab39be662 feat: Improve logging (#13) 
Improves logs and reduces verbosity.

Fixes: #8

Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-01-21 14:35:52 +01:00
Jagoda ŚlązakandJagoda Estera Ślązak 6340f479ae feat: Initial implementation 
Signed-off-by: Jagoda Ślązak <jslazak@jslazak.com>
 2026-01-19 16:49:50 +01:00