DNS stops resolving SBS2011

Running SBS2011
New server about 4 months old
Every 3-4 weeks DNS stop resolving web sites
If I get on a PC and change the Local DNS setting to 8.8.8.8 it works just fine
I tried restarting and clearing out cache on the DNS service and it still does not work.
I don;t see any DNS events
I restated DHCP and DNS started working again
Any suggestions where to start?
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jsarinanaI.T. ManagerAsked:
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Alan HardistyConnect With a Mentor Co-OwnerCommented:
Adding DNS forwarders to the Forwarders tab of DNS (Admin Tools) also resolves this problem, although it isn't the preferred solution.

Alan
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Cliff GaliherConnect With a Mentor Commented:
The most often cause of this is a known issue with DNS in 2008 and 2008 R2. It is an easy fix.
http://support.microsoft.com/kb/968372

-Cliff
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Brian PierceConnect With a Mentor PhotographerCommented:
All machines on the domain including the server must point the server's IP an the ONLY DNS server - don't be tempted to point any machines to the internet either as the preferred or alternate DNS server.

Open the DNS console and make sure that you have a forwarder set to point either to your router or the ISPs designated DNS server - that the ONLY place an external DNS server should EVER be listed.
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Skyler KincaidConnect With a Mentor Network/Systems EngineerCommented:
Cliff is correct and the link he provided should do the trick.

Another temporary fix would be to create a batch file that restarts the DNS Client and Server services on the server at night. Just an idea if the registry change doesn't work.
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Brian PiercePhotographerCommented:
Making sure the Windows server is the ONLY DNS server that clients use and adding forwarders is the way to go as I suggested earlier.

Using forwarders is more efficient than relying on root hints.
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jsarinanaI.T. ManagerAuthor Commented:
thanks
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