How to troubleshoot DNS records for Active Directory?
 
for W2k3-based DCs:
– dcdiag
– dcdiag /test:registerindns /dnsdomain:ad.company.com
– netdiag /fix                         : http://support.microsoft.com/kb/219289
– dnslint (cmd)                       : http://support.microsoft.com/kb/321045
– nltest /dsregdns
 
for W2k8-based DCs:
– dcdiag
– dnslint (cmd)
 
third-party tool:
quest spotlight for AD