securing relay...

JD Doelitzsch jd at BARITEC.COM
Mon Oct 3 22:52:37 IST 2005

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Hey guys,

Im not sure if this has to do with MailScanner or not, because its just
totally beyond me, maybe you can shed some light or point me in the right
direction. The setup is MailScanner pushes to exchange via
Mailertable/sendmail. Access only has in it. When I telnet to
the MS box relay-denied(good) when trying to send other than as
far as i can tell, But when monitoring packets I see spam originating or
relaying from my MS server to the net. It's getting me blacklisted. What
kind of command lets people relay? thats the one thing i can't verify when
looking through the packets. I would like the MSbox only to relay to my
exchange server and nowhere else. The only thing i can think or is to put a
firewall on the MS box to only allow outgoing to my exchange box. What would
be the forseeable results of that? is there a better way?


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