* mxc <m...@jumpingbean.co.za>:
> 
> Hi all,
> 
> It looks like there is a machine on the network that is infected with a bot
> of some kind and it is sending spam through our smtp server. It passes all
> the smtp restriction and checks so it doesn't bounce and is fillinh up our
> queues. I can't seem to see in the maillog which IP address these messages
> are originating from. Is there some way to tell which internal ip address
> they are being sent from?

Yes, look at the received: headers in the queuefiles.
postcat -q ID | less


-- 
Ralf Hildebrandt (ralf.hildebra...@charite.de)          snick...@charite.de
Postfix - Einrichtung, Betrieb und Wartung       Tel. +49 (0)30-450 570-155
http://www.arschkrebs.de
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