I’m having some problems. Cannot resolve dns server name using nslookup from the xp box. All settings seem correct also.
xp dns points to ad/dns server. ad/dns server points to itself and resolves nicely on server box. dcdiag and dnsdiag showed passes EXCEPT DHCP but thats probably related to DNS issue. I have static IPs assigned so DHCP should not be an issue.
I have plugged the setup into a switch without using the ISP modem/router and ran ipconfig /flushdns – /registerdns on both xp and server. Result is still the same. I also did this while disabling the firewall.