To verify the creation of the SRV resource records for an Active Directory domain controller, you can use NSlookup, DNS Manager, or the Netlogon service.
NSlookup1. Open a CMD prompt on the DNS server.
2. Type nslookup.
3. Type set type=all.
4. Type Type _ldap._tcp.dc._msdcs.<DomainName>
NSlookup should return one or more SRV records in the following format:
where <hostname> is the host name of the domain controller, <DomainName> is the domain to which the domain controller belongs, and <ipaddress> is the domain controllers IP address.
DNS ManagerUsing the DNS MMC snap-in, verify that the SRV records exist for the _kerberos and _ldap services in the following folders:
Netlogon ServiceIf you use a non-Microsoft DNS for Active Directory, you can use Notepad to open %SystemRoot%\System32\Config\Netlogon.dns. The first record should be the domain controller's LDAP SRV record: