<div>
This might help..<br />
<a href="https://www.dnsexit.com/Direct.sv?cmd=testMailServer" rel="ugc">https://www.dnsexit.com/Direct.sv?cmd=testMailServer</a>
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This might help..
https://www.dnsexit.com/Direct.sv?cmd=testMailServer [https://www.dnsexit.com/Direct.sv?cmd=testMailServer]

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or the microsoft one..<br />
<a href="http://support.microsoft.com/?kbid=304897" rel="ugc">http://support.microsoft.com/?kbid=304897</a><br />
Hope this helps<br />

</div>


or the microsoft one..
http://support.microsoft.com/?kbid=304897 [http://support.microsoft.com/?kbid=304897]
Hope this helps


<div>
If it is a publicly accessible server I use DNSstuff.com to check for open relays (simple check) or you can use <a href="http://www.abuse.net/relay.html" rel="ugc">http://www.abuse.net/relay.html</a>&nbsp;for a more detailed check.
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If it is a publicly accessible server I use DNSstuff.com to check for open relays (simple check) or you can use http://www.abuse.net/relay.html [http://www.abuse.net/relay.html] for a more detailed check.

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<div class="content wysiwyg-content">
Hi all,<br />
We have a remote server is using Exchange 2003. From what I can see the server is NOT an open relay. I have checked the settings and have run the telnet test to try to relay and no go.<br />
<br />
I am suspecting that a client on the domain may be relaying mail through the server thereby getting around the open relay settings on the server. Not sure at this point whether it's from the outside or insdie.<br />
<br />
I reviewed the following article to setup diagnostic logging to try and help me determine if and who the culprit is. I am not getting anything definitive.<br />
<a href="http://support.microsoft.com/kb/895853" rel="ugc nofollow">http://support.microsoft.com/kb/895853</a><br />
<br />
The server is flooded with NDR events as well as Event ID 7004.<br />
Also the queue is filling up.<br />
<br />
Any thoughts on this would be great. Any tools or other tests I can use to determine the happenings here?<br />
<br />
Thanks<br />

</div>
</div>


Hi all,
We have a remote server is using Exchange 2003. From what I can see the server is NOT an open relay. I have checked the settings and have run the telnet test to try to relay and no go.

I am suspecting that a client on the domain may be relaying mail through the server thereby getting around the open relay settings on the server. Not sure at this point whether it's from the outside or insdie.

I reviewed the following article to setup diagnostic logging to try and help me determine if and who the culprit is. I am not getting anything definitive.
http://support.microsoft.com/kb/895853

The server is flooded with NDR events as well as Event ID 7004.
Also the queue is filling up.

Any thoughts on this would be great. Any tools or other tests I can use to determine the happenings here?

Thanks


Exchange Open Relay - Suspect Client

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.