HADDADD3
asked on
Exchange Message Delivery Issue? SMTP
Users that are trying to email us externally are getting bounces.
Exchange 2003, Windows 2003
If i stop and start the SMTP service it fixes the problem, but obviously that is not a solution.
The bounce message the user is getting is:
451 4.4.1 reply: read error from dc3.*******.com.
<****@*******.com>... Deferred: Connection reset by dc3.*******.com.
Exchange 2003, Windows 2003
If i stop and start the SMTP service it fixes the problem, but obviously that is not a solution.
The bounce message the user is getting is:
451 4.4.1 reply: read error from dc3.*******.com.
<****@*******.com>... Deferred: Connection reset by dc3.*******.com.
ChopperCentury
Are you routing through a smarthost? The SMTP service restarts can sometimes be a sign of DNS issues.
ASKER
No... the service is not restarting itself. It is getting "stuck" and a manual stop/start fixes the issue and allows mail to be delivered again...
Yes, I understand you are starting and stopping manually. This is a quick way to get DNS to retry. Do you see any events in the logs?
ASKER
No events in the logs... Just to clarify its an issue with people sending email into us. I'm not sure if it effects outbound emails. No reports of that yet.
Have you got any anti-spam/AV software somewhere in the chain?
How many domains are getting the bounce message from your exchange server? When you restart the SMTP virtual server do the messages immediately deliver to your users?
ASKER
I'm not sure if the "backlogged" messages get delivered when it restarts.
When it restarts the sending mail server is probably retrying to send the message, and on the retry it goes through.
We do have GFI spam / AV software.
When it restarts the sending mail server is probably retrying to send the message, and on the retry it goes through.
We do have GFI spam / AV software.
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