Dns not updating active directory
Log in as a local user or a local administrator, and then use to verify authentication.
Verify that your Kerberos configuration is set up for the Active Directory domain; the file /Library/Preferences/
Make sure your Mac OS X computer is in the correct time zone, has the correct daylight savings time settings, and uses the same Network Time Protocol server as your Active Directory servers.
After performing SRV requests to find the hosts and ports that offer the required services, you can use NOTE There may be network monitoring processes that perceive as hostile the network traffic you generate to test access to the services, so coordinate with your network and Active Directory administrators before using these techniques.
Understanding the process can help you isolate any problem that might crop up.