email Archives - blog.icod.de https://blog.icod.de/tag/email/ Webentwicklung und sonstiger Unsinn :) Web development and other nonsense :) Tue, 07 Oct 2025 06:32:59 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://blog.icod.de/wp-content/uploads/2017/04/darko-luketic-foto.256x256-150x150.jpg email Archives - blog.icod.de https://blog.icod.de/tag/email/ 32 32 Rejecting Google Groups Spam Mail with Stalwart Mail (Full Config & Rationale) https://blog.icod.de/2025/10/07/reject-google-groups-mail-stalwart/ https://blog.icod.de/2025/10/07/reject-google-groups-mail-stalwart/#respond Tue, 07 Oct 2025 06:32:59 +0000 https://blog.icod.de/?p=2528 Google Groups became our biggest spam source. Because posts are relayed by other tenants, DKIM/SPF often look fine and simple filters under‑react. We solved this by rejecting all Google Groups messages during SMTP. That stops the flood before Inbox/Junk and returns a clear 5xx to the poster. What you have to do in the Stalwart…

The post Rejecting Google Groups Spam Mail with Stalwart Mail (Full Config & Rationale) appeared first on blog.icod.de.

]]> https://blog.icod.de/2025/10/07/reject-google-groups-mail-stalwart/feed/ 0