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Some mail stuck on queue but works fine if force connection

Posted on 2007-12-03
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Last Modified: 2009-07-22
Hi

I have a SBS 2003 Premium R2 with Exchange 2003 sp2 and BPA results are ok.
However some e-mails are getting stuck on the queue indefently. SmtpDdiag works fine. I'm delivering this outgoing emails with DNS.
The other fact is that when I use force connection on any of the messages they get deliver with no problem.
Any ideas?

Thanks
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Question by:sansevieri
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by:Sembee
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What does it say on the queue as the reason for the failure?

Simon.
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by:sansevieri
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It doesen't say nothing (or I don't know where to look) just stays there until I force connection.
The Status of the message is queued, and will have a time of next attemp.

Instruct me where to look, if you will, for more detail.
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by:Sembee
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When you select the queue, at the bottom of the window is a box - it will show the error reason. Something like "cannot bind to DNS" or similar.

Simon.
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by:sansevieri
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The queues says "No adintional information available"
I have a snapshot of the screen that I can send you If you like.
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by:Sembee
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A screenshot will not really help.
Is it always the same domains with the issue?

Simon.
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by:sansevieri
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yes always the same domains. But for example some emails directe to hotmail; will go out with no problem and others directed to another user of hotmail will stay there until force connection it is used.

Thank you for helpping me out in this one, I research the web and coudn't find the solution, so I hope we can get to the bottom of this with your help
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Author Comment

by:sansevieri
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Here is a dump of smtpDiag with one queue that was stuck until force connection was used.


Searching for Exchange external DNS settings.

Computer name is DCSERVER.

VSI 1 has the following external DNS servers:

192.168.100.1,192.168.100.5,208.67.220.220
 

Checking SOA for prologis.com.

Checking external DNS servers.

Checking internal DNS servers.

SOA serial number match: Passed.
 

Checking local domain records.

Checking MX records using TCP: gfp-llc.com.

Checking MX records using UDP: gfp-llc.com.

Both TCP and UDP queries succeeded. Local DNS test passed.
 

Checking remote domain records.

Checking MX records using TCP: prologis.com.

Checking MX records using UDP: prologis.com.

Both TCP and UDP queries succeeded. Remote DNS test passed.
 

Checking MX servers listed for XXXXXX@prologis.com.

Connecting to prologis.com.s8a1.psmtp.com [64.18.7.10] on port 25.

Successfully connected to prologis.com.s8a1.psmtp.com.

Connecting to prologis.com.s8a2.psmtp.com [64.18.7.11] on port 25.

Successfully connected to prologis.com.s8a2.psmtp.com.

Connecting to prologis.com.s8b1.psmtp.com [64.18.7.13] on port 25.

Successfully connected to prologis.com.s8b1.psmtp.com.

Connecting to prologis.com.s8b2.psmtp.com [64.18.7.14] on port 25.

Successfully connected to prologis.com.s8b2.psmtp.com.

Open in new window

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by:Sembee
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Unfortunately that doesn't really help as one of the failures is Postini, who are a major spam filtering service. They could be dropping your connection, but if they were blocking you then I would expect the email to fail with an NDR, not just sit in the queues. Hotmail will not be using Posini, so if you are getting the error with another domain that isn't using Posini it rules out the remote side.

Has this ever worked correctly? What else is on the machine?
Have you tried routing email for those domains out through your ISP using an SMTP Connector?

Simon.
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by:sansevieri
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> Has this ever worked correctly? What else is on the machine?
I don't think so, I had this problem since first installation, 2 weeks ago.
My ISP is sbcglobal through ATT
It isn't that much on the machine Trend Micro bussines Antivirus (but I was having this problem before installing it),  and basic SBS 2003 R2, no ISA,  I only have one NIC.
Have you tried routing email for those domains out through your ISP using an SMTP Connector?
No, Can you refer me a link with instrucctions on how to do it.?
Other fact is that some times the same email adress ex. jhon@hotmail.com will work fine and next time will sit there on the queue.
I don't know what to do and I'm keeping this working by manualy going ever 30 minutes and force connection.
Please help me out ....
Thanks
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Sembee earned 500 total points
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As this is SBS you need to re-run the Connect to the Internet and Email wizard and change the setting to route email via a smart host. The smart host will be your ISPs SMTP Server.

As it is a new installation there could be an outside issue. Is your DNS configured correctly? Do you have something between the server and the internet? A firewall for example? If you do, then ensure it doesn't have any SMTP scanning features enabled.

Simon.
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Author Comment

by:sansevieri
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I will tray these options that yu gave me.
Yes it is a Linksys RV082 router as a gateway.
I belive my DNS is working fine since I don't exeperience any other issue and I have no errors on the event viewer also nslookup works fine.
Let me try the smart smtp host option and I'll let you know.
Thanks for your help
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Author Comment

by:sansevieri
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All right I'm sorry didn't get back sooner.
I'll say that now with smarthost it is  working, however some times i experience 30 minutos delay on outgoing mails but if I force connection will go out very fast.

Thanks
Pd: if you have more Ideas they are welcome, I also thinking on install a second NIC and connect the server straight to internet to see what's happening
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