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Securing SMTP Gateway on Win2k3

Posted on 2004-08-03
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Last Modified: 2010-08-05
We have SMTP Gateway installed on win2k3 to route all incoming and outgoing mail.  I enabled only one server which is our exch2k3 that has access to relay through that smtp server, but if I go to these websites: http://msv.dk/ms009.asp  and http://www.webcomindia.net/tools.htm test my server for relay, it relays one out of ten tries.  How can I stop this?  
I tried 3rd party products like mailsweeper, astaro and Symantec Mail Security for SMTP, all those products worked great for relay issue, but the price is too high.

Please help.
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Question by:itamt
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by:Microtech
ID: 11724335
http://msv.dk/ms009.asp  website has a bug this is on their site

Known bug in this open relay check!
If your mail server in one of the 20 tests accepts mail for delivery,
this open relay check take this as an open relay, but it doesn't check that
the mail actually being delivered to nobody@msv.dk
Next version of open relay check takes notes of this
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by:itamt
ID: 11725338
What confuses me that if I install 3rd party products it stops relay, even though this website gives same results http://www.webcomindia.net/tools.htm 


Thanks.
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by:Microtech
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