This is usually caused by incorrect DNS settings, so start there. Your
server should only look to itself for DNS with forward and reverse
lookup zones set for Internet access. Workstations should only look to
the server for DNS. Here are some links to help you:
How Domain Controllers Are Located in Windows XP -
http://support.microsoft.com/default.aspx?scid=kb;en-us;314861
Setting Up the Domain Name System for Active Directory -
http://support.microsoft.com/default.aspx?scid=kb;en-us;237675
HOW TO: Configure DNS for Internet Access in Windows 2000 (applicable to
Win2003 also) -
http://support.microsoft.com/default.aspx?scid=kb;en-us;300202
DNS and AD FAQs -
http://support.microsoft.com/?id=291382
Malke
--
Elephant Boy Computers
www.elephantboycomputers.com
"Don't Panic!"
MS-MVP Windows - Shell/User