Active Directory DNS sticking when Laptops taken off-site

[nmessick]

When we take our laptops offsite the DNS settings from active directory somehow seem to be sticking. The laptops will pickup new info from DHCP on whatever network the have connected to, however they still try to contact the old DNS servers when though IP config shows otherwise. I've found I can stop this by searching though the registry for my dns servers and deleting the keys, however this is not partical for all users. Any ideas what could be causing this?

 

[Davetoo]

How exactly do you know they're still trying to contact the internal DNS servers externally when IPCONFIG is indicating different DNS servers?


I'm Certifiable, not cert-ified.
It just means my answers are from experience, not a book.

There are no more PDC's! There are DC's with FSMO roles!

 

[itsp1965]

Even though they connect via DHCP, have you checked the DNS tab to ensure that they do not actually have any DNS settings hard-coded?

 

[nmessick]

I know they are using other DNS servers because if I do an NSlookup my network DNS servers are shown, not the ones from DHCP. No, there are no static DNS servers set... I'm not dumb.

 

[itsp1965]

Never said you were dumb, sometimes it's easy to miss the obvious hence my statement

 

[Davetoo]

When you run the NSLookup command while the notebook is detached from the network, what command specifically are you running?

Not saying you are...but just a word of advice. Copping an attitude on TT is the quickest way to not get your questions answered.

I'm Certifiable, not cert-ified.
It just means my answers are from experience, not a book.

There are no more PDC's! There are DC's with FSMO roles!

 

[dberg35]

On question that hasn't been asked is can you access the internet even if they still are still being listed? If you can then there is reason to worry. If you can't do an ipconfig /flush and see what happens.

 

[Seaspray0]

Check the tcp/ip properties on the network interface card on the client. The IP address may be set to automatic, but I bet the DNS is hard coded to use just your DNS servers.

To correct, 1. make sure your DHCP server hands out your dns servers in the DHCP server options. 2. set the client to obtain DNS servers automatically.


Start, Help. You'll be surprised what's there. A+/MCP/MCSE/MCDBA