RE: smtp receives but stops sending
- From: "Mark Dewell" <M.Dewell@xxxxxxxxx>
- To: "[ExchangeList]" <exchangelist@xxxxxxxxxxxxx>
- Date: Tue, 11 Nov 2003 12:09:41 -0000
There are no event log entries generated by this smtp problem.
The smtp logs do not show anything other than normal activity.
GFI runs directly on the exchange server and presumably uses an event sink to
tap into the usual exchange activities so it can get first dibs at any
incoming messages (actually I think the anti-virus gets first dibs and GFI
second but you know what I mean).
-----Original Message-----
From: Mulnick, Al [mailto:Al.Mulnick@xxxxxxxxxx]
Sent: 10 November 2003 18:02
To: [ExchangeList]
Subject: [exchangelist] RE: smtp receives but stops sending
http://www.MSExchange.org/
Do you get any log entries when this behavior occurs? The event log
and the IIS logs would be the place to start looking. Have a look especially
at the IIS logs to see the difference between a good and a stuck message.
I assume that you are just forwarding to GFI, but curiuos if you have
it another way.
Al
_____
From: Mark Dewell [mailto:M.Dewell@xxxxxxxxx]
Sent: Monday, November 10, 2003 11:52 AM
To: [ExchangeList]
Subject: [exchangelist] smtp receives but stops sending
http://www.MSExchange.org/
Can anyone shed any light on the following behavior. We are running
Exchange 2003 and during normal operation the smtp queues will be empty
(apart from the occasionally message or 2 in transit). However, once or twice
a week the smtp service on our front end seems to stop delivering messages,
but does continue to accept them, with the result that if left unchecked we
get a backlog of thousands of messages in the 'Messages pending submission'
queue. To resolve this we have to restart the smtp service, which is normally
not possible. So we instead have to set the service to 'disabled' and then
restart the entire server. The queue contents can then be moved out to a
temporary location and the smtp service restarted. If we restart without
clearing the original queue contents the IIS service often crashes, but if we
start up with an empty queue we can feed the backlog back into the system a
thousand at a time via the pickup folder and this will successfully deliver
them. So this seems to imply that it is not the queue/message content that is
causing the problem.
We originally saw this problem with Exchange 2000, but successive
service packs and now Ex2003 have not fixed the problem. It only seems to
happen at busy periods, like the Autumn term of a University. It ran without
a hiccup over the summer break.
We have a very fast network with several AD global catalogs available
so I don't believe this to be an active directory related problem, but.....
We are also running GFI MailEssentials on this server, but only since
June and the problem has been occuring on and off for the last couple of
years. Sophos Mail Monitor Anti-Virus also runs on this and all our other
Exchange servers, but only this one front end server has the problem.
Is anyone having a similar problems?
Any ideas how we can investigate this further (The events logs show
no errors during the time period this occurs).
---< Mark Dewell, University of East London, Dagenham, Essex, UK
>---
---< Email : M.Dewell@xxxxxxxxx
>---
---< URL : http://homepages.uel.ac.uk/1278
>---
< Practice random kindness and senseless acts of beauty (Anne
Herbert) >
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