Re: Messages pending in queue
- From: v-robmen@xxxxxxxxxxxxxxxxxxxx ("Robbin Meng [MSFT]")
- Date: Wed, 03 Sep 2008 10:23:42 GMT
Hello,
Thank you for your post.
Please allow me to confirm that my understandings are correct. As I
understand it, the issue is:
Recently, incoming messages are getting stuck in 'Messages pending
submission' queue for a very long time before finally being delivered. The
CEICW failed at E-mail configuration and you finally found the SMTP service
is stopping.
If I have misunderstood the problem, please don't hesitate to let me know.
First, I would like to explain for the " Messages pending submission "
queue:
Queue: Messages pending submission
First Available: Exchange 2000 Service Pack 2
Description: This queue holds messages that have been acknowledged and
accepted by the SMTP service. Messages that are in this queue have not been
processed.
Troubleshooting: If messages are constantly accumulating, you may have a
performance problem. Occasional peaks in CPU performance can cause messages
to appear in this queue intermittently. Frequently, problems with event
sinks (for example, custom SMTP processing code for antivirus screening and
for disclaimers) cause messages to accumulate in this queue.
More information:
How to use Queue Viewer to troubleshoot mail flow issues in Exchange Server
2003
http://support.microsoft.com/kb/823489/en-us
Based on the current situation, I would like you consider the following
suggestions:
1. Block an available time and restart SBS 2003 server so that all related
services will be restore to default status.
If the issue persists, try step 2.
2. Check if you have any 3rd party anti-spam(not only anti-virus) program
that is running.
Based on the customer's feedback and experience, this kind of issue may
also occur if SBS server has 3rd party anti-spam , for instance, GFI mail
essentials or Trend Micro ScanMail installed. The pre-submission queue is
the entry point in the advanced queuing engine. When a message is put into
the pre-submission queue, custom SMTP processing code, such as event sinks
for antivirus screening, processes the message. In this case the Sinks are
unable to process the messages.
If so, please temporarily uninstalled(not only disable, if possible) the
product and see if inbound mail flow resume or not.
3: Enable the Diagnostics Logging to Maximum
Please try the steps in the following article to enable and set Diagnostics
Logging to Maximum for MSExchangeTransport services. Then send a test
email and after a while, check if there is any warning or error message
regards to this test email in Event log.
You may refer to the following article for detailed steps:
How to troubleshoot for Exchange Server 2003 transport issues
<http://support.microsoft.com/kb/821910/en-us>
For your reference, here are some other articles about messages stuck in
outgoing queues in Exchange server:
An e-mail message that you send to a dynamic distribution list is not
delivered successfully in Exchange Server 2003
http://support.microsoft.com/kb/832425/en
How to troubleshoot messages that remain in the "Messages awaiting
directory lookup" queue in Exchange Server 2003 and in Exchange 2000 Server
http://support.microsoft.com/kb/251746/en
Messages remain in the "Messages awaiting directory lookup" SMTP queue in
Exchange Server 2003 or in Exchange 2000 Server
http://support.microsoft.com/kb/884996/en-us
E-mail messages become stuck in the "Awaiting directory lookup" queue in an
Exchange Server 2003 organization
http://support.microsoft.com/kb/922256/en-us
If we cannot resolve the issue after we perform the above steps, please
help me collect some information for further investigation:
Information Need
==============
MPS report for Exchange:
1. Please download a tool from the following link:
<http://download.microsoft.com/download/b/b/1/bb139fcb-4aac-4fe5-a579-30b0bd
915706/MPSRPT_Exchange.EXE>
2. Double-click the downloaded EXE file to collect the MPS report.
3. Please send the generated CAB file to me at: v-robmen@xxxxxxxxxxxxx
Hope this helps. Also, if you have any questions or concerns, please do not
hesitate to let me know. :)
Thanks for your earlier feedback!
Best regards,
Robbin Meng(MSFT)
Microsoft CSS Online Newsgroup Support
Get Secure! - www.microsoft.com/security
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