I dont know how to turn on message tracking.
Its ONLY happening from our Faculty/Staff Exchange server to our Student Exchange server.
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Mail stuck in queue - Exchange 2003
Started experiencing some strange problems recently. To make things
more clear, let me first explain our setup:
I'm the network admin at a small university. We have two domains here,
xxx.edu and xxx.com. One is for students, the other for faculty and
staff. Both have their own Exchange 2003 servers, which are located on
campus. Both Exchange servers are behind both a Barracuda Spam
Firewall, as well as our Watchguard Firebox. The two mail servers are
on the same physical network, but are seperated by VLANs only.
The problem we've been experiencing is that mail from our faculty/staff
side is either being delayed or not being delivered at all (sometimes)
to our students. In some cases, the mail will be sent, but only after
several hours. In other cases, the mail just sits in the queue in the
faculty/staff email server, until I reboot that server. When the mail
is sitting in the queue, I can try to force a connection with no
effect. At the same time, I can successfully connect via telnet 25 to
the student mailserver from the faculty/staff mailserver.
At this point, the mail to our student server is stuck in the queue,
and rebooting the faculty/staff server hasnt released it. I'm in
desperate need of a fix here! Can anyone help?
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Answers
ill give you a link http://www.amset.info/exch
Turned on message tracking, and sent a test message. Results were as follows:
11:20AM SMTP Store driver: message submitted from store
11:20AM SMTP Message submitted to advanced queuing
11:20AM SMTP Started message submission to advanced queue
11:20AM SMTP Message submitted to categorizer
11:20AM SMTP Message categorized and queued for routing
11:20AM SMTP message routed and queued for remote delivery
First thing I would do is run the Exchange Best Practises tool on all servers and see if it flags any issues.
When these messages are stuck in the queue, if you click on the queue, what error does it say?
How do you route email for these domains between servers? Do you rely on DNS lookups or use an SMTP Connector?
If you are using DNS, are you using public DNS servers and records, or private DNS servers and records?
Simon.
Thanks guys, I finally found a fix.
Poweruser32, you were correct in that it was a DNS problem. It was a dns problem on our Faculty/Staff side.
Sembee, thanks for pointing me to the Exchange Best Practices Tool, as it helped me identify the problem.
The best practices tool identified that we were using an external DNS server to resolve for our Faculty/Staff Exchange Server. After removing that (Opening ESM > Servers > servername > smtp > properties > Delivery Tab > Advanced > Configure DNS), and restarting the SMTP service, all mail to our student exchange server was delivered, and the queue was cleared!
Thanks again!
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by: poweruser32Posted on 2007-01-24 at 07:59:10ID: 18386844
if you turn on message tracking at what point are they getting stuck?it may be during AV scanning
does it happen external sending as well?