How do I troubleshoot Active Directory DNS name resolution issues?

1. Check the DNS configuration
   Check nameserver configuration to ensure the correct DNS server is pointing the domain name to the correct IP address.
2. Check the zone status
   Make sure the primary and secondary zone are active and running.
3. Check the contents of the DNS record
   Review the A types of DNS records and make sure the record types are up to date.
4. Check the DNS cache
   Clear the local DNS cache to ensure the changes are registered.
5. Check the firewall configurations
   Make sure any firewalls between clients and DNS are properly configured for DNS communication.