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SBS 2003 SMTP Service loses messages

I have been pulling my head out trying to figure out why my exchange server will not send any emails. Whenever I send a message the email appears to be sent ok, there is no messages waiting in the queue. I am using a smarthost which is working and is ready to receive emails. I have tested this using telnet. I have just upgraded exchange to sp2 in the hope that this would fix the issue to no avail. I configured the smart host to send the messages to an older 2000 server I have and I can see that the the smtp service connects but quits imedietley. See typical log below. I am at a loss as to why this is happening. Nothing has changed in the environment it has just stopped out of the blue.

14:17:55 10.1.1.6 EHLO - 250
14:17:55 10.1.1.6 QUIT - 240
Any help appreciated
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Michael
Asked:
Michael
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1 Solution
 
MesthaCommented:
What does message tracking say?
An immediate quit is odd. Could be an authentication issue. Have you touched any settings there?

Run the SBS Best practises tool (free download from MS) and ensure that doesn't flag anything.

Simon.
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MichaelAuthor Commented:
Only one entry in the message tracking:
SMTP Store Driver:Message submitted from store

I expect at least anther half a dozen lines

We have made no changes to any auth settings

Regards
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MesthaCommented:
If you bypass the smart host, what happens?
My instinct says that SMTP could be corrupt. Did the best practises tool flag anything?

Simon .
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MichaelAuthor Commented:
If i bypass the smarthost I get the same behavior. The BP tool did not reveal anything relevant. No critical issues at all.
If smtp is ocrrupt how can i go about re-installing it?

Regards
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MesthaCommented:
To reinstall SMTP means a reinstall of IIS. That on Exchange isn't straight forward.
http://support.microsoft.com/kb/320202

Simon.
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