IIS Dies

I have a machine running Windows 2000 server, and every couple of days, IIS dies.  There is nothing in the event log except a couple of timeout messages from MSFTPSVC, and restarting IIS does not work (I have to restart the entire server).  Does anyone have any ideas about what could cause that?
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mnashadkaAsked:
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rhandelsCommented:
Hi,

What SP's are you running?? First try to update to the latest SP and make sure to install all releases...  Problem with these kind of errors is that they are very hard to find... Do you have some sort of firewall thet protects the IIS server?? Maybe a small DDOS attack is your problem (just a suggestion though)..
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mnashadkaAuthor Commented:
I have SP4 running, and we run Windows Update on it pretty regularly (last week was the last time).  We have a separate firewall (it's an internal-only web server).  Judging by the IP's that everything is coming from right before the crash, it doesn't look like a denial of service attack, although I will look into that.
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rhandelsCommented:
Is this a Compaq or HP server?? You might want to try using the Insight Manager to see if all hardware is still up and running..
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mnashadkaAuthor Commented:
It's an IBM server.  I don't think that hardware is an issue, because we can still get into the box and check the hard drives and whatever.  We can Dameware into the box, so there's no obvious issue with the network card.  There are also no entries in the event logs (system or application) that say anything about hardware having issues.  Is there something else that I can check to ensure that it's not a hardware issue?

Thanks for your help.
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rhandelsCommented:
Hi,

I'm afraid that there is nothing else you ca do to check the hardware.. It could be that something in the server is dying very slow.... Without any event or other strange things on the server (you did check for virusses and spyware i guess) there's not much you can do to get it fixed...

You could try doing a reïnstall of IIS (make sure to backup the site), maybe this will do the trick.. Are there any other services on this machine?? Exchange maybe?? Try looking into the inetpub\mailroot\queue folder, maybe your IIS server is being used as an open relay... Maybe your harddisk space is adding up.. You could try checking this...
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mnashadkaAuthor Commented:
There are plenty of other services on the machine (like SQL Server), but they all seem to be fine.  The machine itself doesn't die, just IIS.  The server is new and has only been in place a month or two, and this just started happening last week.  There is nothing in the inetpub\mailroot\queue folder.  Do you have any other ideas?
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rhandelsCommented:
Hi,

Besides a hardware failure (which i don't think it's the problem), i believe the only option would be to do a reïnstall of IIS, else i'm plain old lost...
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mnashadkaAuthor Commented:
It turned out to be a problem with mismatched backup software, but thanks anyway.  I'll give you the points because you tried.
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