Dnia 21.10.2022 o godz. 16:40:40 Henry R pisze: > > As a receiver MTA (postfix), if DKIM, SPF or DMARC has got failed to the > sender domain, what action postfix will take for this incoming message? > reject or greylist it?
Postfix by itself doesn't check DKIM, SPF or DMARC. It simply ignores them completely. So it will just accept the message, assuming other configured restrictions (like RBLs) wouldn't reject it. You have to use additional software to check DKIM/SPF/DMARC. -- Regards, Jaroslaw Rafa r...@rafa.eu.org -- "In a million years, when kids go to school, they're gonna know: once there was a Hushpuppy, and she lived with her daddy in the Bathtub."