open relay problem (again)

Posted on 2008-06-12
Last Modified: 2013-11-30

I have the "open relay" problem with exchange server. I have just done all operations read in microsoft KB and others.
Every configuration was checked but if I do the tests in some web sites., in some case it say "relay accepted".
Do you have other suggestion for me?
thank you

Question by:gtuzzato
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LVL 25

Expert Comment

Comment Utility
the open relay tests are iffy at best, test it yourself.

From the server;
Start > run > telnet localhost 25
subject:this is a test

If it says "cannot relay for..." anywhere in there, you are fine.

Author Comment

Comment Utility
thanks for your help

ok, it say unable to relay, but I have the problem the my server is in some blacklist
like this
and others......
other suggest?
thank you again
LVL 25

Accepted Solution

kieran_b earned 500 total points
Comment Utility
Your IP is in a DUL or Dynamic User List - meaning you are never getting off that list.

You need to talk to your ISP and request a new static IP, or relay all your mail through them.

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