Apply default DNS server with GPO?

[Rinnt]

Hi all,

Is there a way to assign a default DNS server for Internet browsing with the GPO? There seems to be a strange issue where our DNS numbers have mysteriously changed - but only for those citrix/term serv users in the company policy. I noticed that when they start their browsers they aren't resovling web sites to our normal DNS server. This also sounds rather suspicious to me, but the Event Logs don't reveal any strange activity. Would mixed-mode have anything to do with it?

Ideas?

Thanks in advance...

 

[brontosaurus]

DNS resolution would be entirely controlled by the terminal server's settings. Double check that. Of course, these users may also be picking up some bogus proxy settings as well....