RE: Front End Server hold all incoming email

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Date: Thu, 14 Oct 2004 07:49:04 -0700

Thanks for the reply Darin. It turns out it was Anti-virus software. The
strange part was that it would work when I started to shutdown, so I went
through the list stopping all services, waiting 5 mintues, and then starting
it. As soon as I stopped the Symantec services it started flowing.

Thanks Again.

""Darin Roulston [MSFT]"" wrote:

> Hi Mike,
> That is an interesting one. I have some more questions for you that may
> point you in the right direction.
>
> -when problem happens, does outgoing mail to internet and all other
> possible directions flow fine (not sure how you're environment is set up)
> and it's just FE to BE where mail is backed up? If it was something to do
> with a resource bottleneck or file locking I would expect it to happen in
> both directions.
>
> -when this happens, if you right click on the queue that is backed up and
> hit properties, what is the diagnostic information at the bottom of the
> dialogue box? This will often give a reason why we are not passing mail
> over this connection.
>
> -are we running any file-level antivirus, anti-spans or Exchange aware
> antivirus software on the box? Anything that may hook into SMTP? If you are
> doing file-level AV, have you excluded the mairoot folder?
>
> -can you telnet to the backend server from the front-end over port 25 when
> problem occurs (I'm guessing you probably can but good to check)?
>
> -When you restart Exchange Services are you including the SMTP service (not
> the virtual server)?
>
> -Anything that happens on Tuesday, like maintenance, that may be of
> importance?
>
> - I'd turn all transport logging to max (or to debug level 7 in the
> registry) and when problem recurs then restart SMTP and see if you get any
> warning's errors.
>
>
>
> Darin Roulston
> Microsoft
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>
>
> Hello all,
> This is the second time this has happened. Both times it happened on a
> Tuesday evening.
>
> Here is the situation:
> We have an Exchange Front-End server that processes all incoming and
> outgoing email. Sometime Tuesday evening the incoming email stops getting
> sent to the back-end servers. When I come in the next day there are over
> 1000
> emails in the queue. I tried restarting the virtual server, restarting all
> of
> the Exchange services, and nothing works.
>
> However, When I finally give up and reboot the server the mail flows
> imediately after I tell it to restart. During it's shutdown cycle something
> kicks in and it starts flowing again. Once the reboot completes, it
> finishes
> the queued mail and is fine for a week.
>
> Any ideas?
>
> Mike
>

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