I know that.  What I *WANT* to know is who (if anyone) is
attempting to bounce spam off my  SMTP  proxy, so I can go
complain to their ISP, the same way that I do if someone
tries to telnet into my network.

Please notice that my original message did not ask for changes
in the  SMTP  proxy functionality, only that it be given
the ability to send alarms when it rejects an SMTP connection
or session.

Mike Burden
Lynk Systems
(616)532-4985
[EMAIL PROTECTED]


-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of
Alex Howansky
Sent: Wednesday, August 02, 2000 1:53 PM
To: [EMAIL PROTECTED]
Subject: RE: SMTP alarm


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> But if you're using the  SMTP  proxy, then where else can
> you catch this?  If someone tries to bounce spam off the
> GNAT Box  SMTP  server, the mail server never knows...

GNAT Box is not an SMTP server. It can't handle messages by itself.
Everything
that it accepts after applying its own anti-spam rules (reverse DNS check,
MX
check, MAPS check, etc.) gets passed to the internal mail server, regardless
of
the ulitmate destination address. If you're using the "Accept only these
domains" feature or the MX check feature, then you're preventing relaying
right
there. Your internal mail server may (and probably should) even go beyond
that.

--
Alex Howansky
Wankwood Associates
http://www.wankwood.com/


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