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SMTP Queue Stuck - Exchange 2003, SBS

Posted on 2008-10-17
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Last Modified: 2013-11-30
Running SBS 2003, Exchange Server 2003

We have several queues (comcast.net for example) reporting as "Active", but any/all messages for the past 2 days are just sitting in there and not moving. I've tried restarting the SMTP services, Freezing/Unfreezing, Forcing connection, but nothing gets them moving.

Any ideas on how to resolve this?
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Question by:derekkromm
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by:DenverRick
ID: 22743899
Check the rest of your MS Exchange services.  A reboot may be easier.
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Author Comment

by:derekkromm
ID: 22743926
I agree, a reboot is easier than trying to restart every Exchange service.

However, its business hours. And its SBS - we only have 1 server for everything!

On top of that, most of the queues work just fine. When I send to verizon.net, I don't have a problem.
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Expert Comment

by:DenverRick
ID: 22743947
Go here and make sure you haven't fallen out of compliance with comcast.net

 http://www.comcast.net/help/faq/index.jsp?faq=SecurityMail_Policy18784
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Expert Comment

by:DenverRick
ID: 22743969
From a command prompt at the server, 'telnet mx1.comcast.net'
You should receive:
220 IMTA25.westchester.pa.mail.comcast.net comcast ESMTP server ready

If you receive the following, you have an issue at your end:
554 IMTA15.westchester.pa.mail.comcast.net comcast 71.216.82.13 Comcast requires
 that all mail servers must have a PTR record with a valid Reverse DNS entry. Cu
rrently your mail server does not fill that requirement. For more information, r
efer to: http://www.comcast.net/help/faq/index.jsp?faq=SecurityMail_Policy18784
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Expert Comment

by:DenverRick
ID: 22743974
Sorry, the command is
       telnet mx1.comcast.net 25
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Author Comment

by:derekkromm
ID: 22744012
When I do the telnet I get nothing returned - eventually it just goes back to my command prompt.

I'll take a look at the links.
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Expert Comment

by:DenverRick
ID: 22744043
If you get nothing, what happens when you

ping mx1.comcast.net ???
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Author Comment

by:derekkromm
ID: 22744752
request timeout

DNS resolves to 76.96.62.116
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Accepted Solution

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DenverRick earned 500 total points
ID: 22744821
Go into your local DNS manager, make sure 'View', 'Advanced' is set.

In the Cached Lookups, drill into and find the leafs (folder object) for the stuck domains.  Delete them.

In command prompt ipconfig/flushdns.

Should do the trick.

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Expert Comment

by:odegwu
ID: 22748985
How do i get access to smtp. I have upgrade my account to premium member.
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Author Closing Comment

by:derekkromm
ID: 31507251
flushing the dns worked. thanks
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