]> git.ipfire.org Git - thirdparty/rspamd.git/commit
[Feature] headers_checks: add Reply-To address validity checks
authorVsevolod Stakhov <vsevolod@rspamd.com>
Sun, 1 Feb 2026 12:31:17 +0000 (12:31 +0000)
committerVsevolod Stakhov <vsevolod@rspamd.com>
Sun, 1 Feb 2026 15:44:47 +0000 (15:44 +0000)
commite95533f1fde2489fb5de7ff10af1d2082ea0fde2
treeae001353704dcdad05b80774597cabfca5425ffc
parentd927876b5a8a36ebe6bfa07407db1bc7333d4759
[Feature] headers_checks: add Reply-To address validity checks

Add RFC 5321 compliance checks for Reply-To header:
- REPLYTO_INVALID: address doesn't pass RFC 5321 validation
- REPLYTO_LOCALPART_LONG: local-part exceeds 64 characters
- REPLYTO_DOMAIN_LONG: domain exceeds 255 characters

This helps detect spam with intentionally invalid Reply-To addresses
that users cannot actually reply to.

Closes: #5854
rules/headers_checks.lua