DNS stops working

[Ruben]

Hello,

 

I Have a Server with Windows 2008 standard edition SP1 installed.

 

The server works well, it shares internet with all the computers in the network with ICS.

 

Everytime after about 3 days all the computers can't go on the internet anymore, but on the server still works.

 

The only way to resolve the problem is to restart the dns service.

 

If I Use routing and remote acces it works to share my internet connection but after a few days I have always a blue screen crash.

 

Does anyone have some experience with this problem?

 

Kind regards

 

Ruben

[F2 Staff]

What kind of errors are you getting in your DNS error logs?

 

What is the bluescreen error code?

[Ruben]

There is no error in the error log, About every 2 to 3 days recursive queries fail on my w2k8 server.

 

The server still respond to DNS queries for the AD integrated zones, but is unable to reslove any internet names.

 

Only a restart of the DNS service or clear the cache fixes the problem

[F2 Staff]

Maybe your network to internet goes down for a short time?

 

That would be the only thing I can think of that would cause the problem.

[bgancherov]

are you using dns forwarders or root hints?

[Ruben]

I'm using forwarders

[Phillips]

You could also set the secondary DNS ip address to the workstations to something like 4.2.2.1 very fast and reliable DNS server. This would keep the workstations alive and online without restarting services.

[oscar]

make sure you have one server set as a primary dns server for all .com (external) zones en active directory integrated for local zones. the other server set local zones ad integrated as well and other zones seconary zones... Make sure you enable "replicate to servers in server name tab" and add your dns servers in the name servers tab.

 

It sounds like after a dns problem when a server atemps to replicate zones..

 

This should be the trick.

 

good luck

[mcbain]

I have exactly this problem too. I would be interested to know if you solved it?

 

My 2008 server DNS stops providing any DNS responses every few days but with absolutely no errors. Restarting the service does the job, but I shouldn't be needing to do this!

 

It is a single DNS server on a single DC on a test network - no replication going on. It is using the root hints to resolve internet names.

 

Now, dcdiag /test:dns alerted me to the fact that some of the root hints were wrong. So I updated them from the latest list from internic.net.

 

However, dcdiag /test:dns still complained some were wrong - I removed that one, ran it again and it failed on several other root hint servers - and then was fine again. Is this the 'root' of the problem?!?

 

The only other thing is that I am not using IPV6 - the diagnostics also moan about the missing AAAA records and so forth - but I am not using IPV6, its disabled on the nic, so there are no IPV6 addresses to have records for - so I assume this just the diagnostics not being too clever.