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postfix-users: Re: Backscatter problem

Re: Backscatter problem

From: Ralf Hildebrandt <Ralf.Hildebrandt_at_nospam>
Date: Thu Oct 28 2010 - 09:13:22 GMT
To: postfix-users@postfix.org

* Martin Kruse Jensen <mk@iktp.dk>:
> Den 28-10-2010 10:36, Ralf Hildebrandt skrev:
> >* Martin Kruse Jensen<mk@iktp.dk>:
> >>Hi.
> >>
> >>I'm having quite some trouble trying to prevent backscatter on my
> >>postfix server. Mail queue is filled with undeliverable mailer daemon
> >>messages. Yesterday I added local_recipient_maps but it dosn't seem
> >>to have helped...
> >WHAT exactly is bouncing? Check the bounces!
> >
> I've got 934 of the following kind in mailq:
>
> F0A257BA2AB 7374 Sun Oct 24 14:42:40 MAILER-DAEMON
> (delivery temporarily suspended: connect to
> mailfrom.com[82.98.86.167]:25: Operation timed out)
> error@mailfrom.com

Look INTO those to find out what went wrong.
postcat -q F0A257BA2AB |less

-- Ralf Hildebrandt Gesch├Ąftsbereich IT | Abteilung Netzwerk Charit├ę - Universit├Ątsmedizin Berlin Campus Benjamin Franklin Hindenburgdamm 30 | D-12203 Berlin Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962 ralf.hildebrandt_at_charite.de | http://www.charite.de