[ExchangeList] Relaying mail but NOT an open relay... Compromised?

  • From: "Tasita Ebacher" <tebacher@xxxxxxxxxxxxxxxxxxxxx>
  • To: <exchangelist@xxxxxxxxxxxxx>
  • Date: Mon, 17 Jul 2006 09:30:31 -0500

http://www.msexchange.org
-------------------------------------------------------Hello all,


I'm working on an Exchange Server 2003 server that appears to be sending
mail like it's an open relay.  In the Message Tracking Center there are
lots of messages (a few every minute) that are from external domains
being sent to other external domains.  

The server is setup to NOT be relaying anything, and Relay tests have
proved negative for being a relay.

The client has even called Microsoft to get support on the server and
they couldn't find any problem.  I just don't see how it's relaying
mail...  Unless it's internally compromised somehow, but I can't see
anything unusual.


Has anyone ever seen anything like this before...??

I appreciate any advice!

Thank you,
TE
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