DNS Stops working after about a week.

[spudnuts]

I'm not sure why but my DNS service stops working after about a week. The service is running but unable to resolve anything. Everything starts working again if I reboot the DNS server. I'm running a Windows 2000 domain in mixed mode, since we still have some NT machines to get rid of.

Once the server is rebooted, everything works fine for about a week.

Any help would be great.
Thanks

Information Assurance,CCNP,CST

 

[FloDiggs]

Any errors in the event about the time that DNS stops?

 

[spudnuts]

The only thing in the event log is a few invalid packets that were rejected. The service doesn't stop running, just stops resolving.

Information Assurance,CCNP,CST

 

[FloDiggs]

This was an issue a while back, but it was fixed with SP3 or SP4. If you don't have those installed, I would isntall them. Otherwise, I think the work around was to clearn the DNS cache on the server. Does it only stop resolving external names? or internal as well?

 

[spudnuts]

I've already installed SP4 along time ago so that isn't the problem, OS is completely up to date. Internal seems to be working fine, i'll clear the cache next time instead of rebooting and see if that takes care of it.

Thanks

Information Assurance,CCNP,CST

 

[Roadki11]

Could just stop and start the dns service also, probably no need for a reboot. could also reinstall sp4 and reinstall the updates since then. could create a batch file to do net stop dns, net start dns and schedule it to run once a day or once a week.

just some ideas,

Roadki11

 

[markdmac]

Make sure that your DNS is configured properly as well.

DNS Settings:

Configure the server NIC to only list itself or other DCs, no ISP DNS gets configured on the NIC TCP/IP properties.

In DHCP, set the DNS scope option to only provide the IP of your local DNS server

For any statically configured IPs, make sure the DNS only lists local DNS servers and not ISP DNS.

In the DNS snap-in on the forwarders tab enter your ISP DNS.

I hope you find this post helpful.

Regards,

Mark

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