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DNS Stops Working, but not the service

I have had the following scenarios occur since I installed this 2008R2 Foundation Server:

1. The server and clients internet goes down.  All intranet activity is great.
2. The clients internet goes down, but the server's doesn't.

Both can be solved by restarting the DNS Service.

This is happening at least once every day, at random times.  I've applied a hotfix I thought described my problem, added registry entries, and still, it goes down.

Short of scheduling a restart of the service a couple times a day, I am stuck.
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ami_tech
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ami_tech
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1 Solution
 
Hypercat (Deb)Commented:
Is your server using forwarders for DNS or root hints?

What hotfix did you apply?
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ami_techAuthor Commented:
Forwarders.

Also, when I run netdiag, I got certain errors speaking to the TimeServices... I corrected that per a Microsoft Article, that went away, then an error came up saying DNS wasn't working, checked, and no internet.  Restarted DNS, now I get a whole new set of errors.  This time, the internet went down within one hour of restarting the service.

Hotfix: KB Article Number(s): 2655960
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ami_techAuthor Commented:
Nevermind, cleared the logs and that cleared the errors/warnings.  Now, it is a waiting game.
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Hypercat (Deb)Commented:
First, the simplest thing to do as a check is to remove the forwarders from your server and set DNS to use only root hints.  If this works, then it's the forwarders that are at fault, and you can run using root hints instead, or you can find new forwarders to use.

If that doesn't work, please run netdiag and post the results, or at least any errors that come up.  Also, run netdiag /dns separately so we can see the results for the DNS service specifically.
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Hypercat (Deb)Commented:
Also, look at this article, if the problem seems to appear intermittently and/or affects only a subset of websites:

http://support.microsoft.com/kb/2508835
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ami_techAuthor Commented:
It did it again!  So, when the computers are left on over the weekend, no one touching them.  I remote in, and no problem.  The moment they come in today (Monday), and try to clock in or whatever they do in the morning, BAM, internet went down. The weird part is now the majority of logs I see on the server are WSUS issues, which is down at the moment.  A restart of the DNS service worked just fine to get the internet back.

On a side note, one particular desktop in particular has some kerberos errors, should I worry about them much?
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Hypercat (Deb)Commented:
Did you try any of my suggestions?  Kerberos errors are often caused by the workstation's time service not being synchronized with the server. There are also other things that can cause them, like services logging on, etc.  What are the exact errors?
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ami_techAuthor Commented:
I have done everything I can regarding time on the server.  The only thing I have not done is get rid of google forwarders to see if root hints work better.  

I am, however, starting to wonder if it could be a workstation doing something to overload the DNS somehow.
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ami_techAuthor Commented:
Went ahead and reformatted the darn thing.  I think I may have traced the issue down to the failing Intel Active System Console, but that was uninstalled, so I can't be certain.
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ami_techAuthor Commented:
.
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