Zitat von Michael Weissenbacher <m...@dermichi.com>:
Hi List! I am having the problem that our Postfix Mail Server generates too many bounces which unfortunately results in getting listed (at least at backscatterer.org). Having digged deepter into the problem i already read and followed [1] as well as the obvious stuff like correct local_recipient_maps. The problem i now have is like the following: - our server accepts mail for localu...@localdomain.com - there is a entry in /etc/postfix/virtual that forwards this mail to foreignu...@foreigndomain.com (which is a legitemate destination and usually accepts mails without a problem) - the foreign server detects spam or a virus and rejects the delivery, i get an entry in mail.log like: status=bounced (host email.foreigndomain.com[1.2.3.4] said: 554 mail server rejected message: spam or virus detected (#5.3.0) (in reply to end of DATA command) - our server of course then generates a bounce to a fake sender which either fails because the sender doesn't exist or it triggers some spam trap I've basically got 2 solutions in mind but i'm unsure on how to implement them (or if they even make sense): - It it possible to not generate bounces which go to external destinations at all. Can i define anywhere that bounces may only go to known local users? - It it possible to send the bounces (or only external bounces) via an alternate relayhost. That way i would prevent that our main smtp host's ip is getting listed. tia, Michael
Do NOT forward mail to destinations that bounce mail. Either get the final destination to accept the forward mail or disable the forwarding when bounces are detected.
Disable bounces is NOT a solution but making the problem worse. Regards Andreas
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