I self-host a number of Discourse instances using mail-receiver. I noticed the conversation below, and am wondering – do I need to Rebuild the mail-receiver.yml files for these sites? [画像] Remove smtp_should_reject & discourse-smtp-fast-rejection Development Continuing the discussion from Seeing smtp_should_reject "400 bad request" failures on bounce processing: I’m making this topic to summarise some internal discussion we’ve had. We’ve identified that the codepath in smtp_should_reject is not functioning correctly and causing mail to be rejected in situations where it should not be. Specifically: bounce messages (having a null envelope-from) forwarded mail to mismatch (the fast-rejection check used the envelope-to, whereas Discourse uses the…

You can update either mail-receiver or Discourse and it’ll fix the problem.

セルフホスティング - mail-receiverをいつ再構築すべきか？

supermathie (Michael Brown) 2025 年 11 月 25 日午後 8:42 2

mail-receiver または Discourse のいずれかを更新すると、問題が解決します。

トピック		返信	表示
Remove smtp_should_reject & discourse-smtp-fast-rejection Development	2	216	2025 年 11 月 25 日
Seeing smtp_should_reject "400 bad request" failures on bounce processing Bug mail-receiver	13	587	2025 年 11 月 24 日
Mail Receiver setup Self-hosting mail-receiver	1	364	2024 年 5 月 10 日
Reducing backscatter in email interface? Feature	22	3605	2025 年 11 月 27 日
Mail-Receiver Configuration: 403 Error on smtp_should_reject Endpoint Product Support mail-receiver	1	168	2025 年 2 月 20 日