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 [1] http://www.postfix.org/BACKSCATTER_README.html
