Dnia 15.10.2023 o godz. 08:52:18 B Williams via Postfix-users pisze:
> There is a spam network that has figured out that they can bypass my spam
> filtering service by ignoring the MX record and just sending mail directly
> to the mail server. Pretty sneaky.
[...]
> Open to any and all ideas!

The best idea here is to run your own spam filtering directly on your
server, and not rely on any external service.
-- 
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."
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