[IMail Forum] Networking of Imail server goes down once a day

[Geza Levai]

A strange thing is happening with our email server for months now and I am getting fed up with it, so I decided to get to the bottom of it.

The Imail server v8.22 (W2k server with SP4) looses its networking in average once a day or every other day. What I mean on loosing is that for example when I get a time out error on the email client, I do the following on the Imail server locally:

At a command prompt I type ipconfig/all, = all settings are OK.
I pinged 127.0.0.1, replies OK
I pinged the IP of the default gateway, it's timing out and if you ping any other IP, the result is the same.
I looked at the event logs, no error in it that would give me a clue.
If I reboot the server, everything is fine for another 24 hours.

Our Imail server receives mail through Postini, and the firewall has been set up to allow smtp 25 traffic only from Postini servers. based on the log file, our email server receves 1500 messages a day average.

So, what troubleshooting steps do you guys recommend for this particular problem?
Until I find out what is the problem, what services related to tcp/ip networking I could restart on the server that would substitute rebooting the server?

Geza
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