Registration (dynamic or manual) of the following A record(s) for computers that are global catalog servers in a Windows 2000-based forest is required:
gc._msdcs.DnsForestName
There are certain situations when you may want to disable the registration of A records performed by the Netlogon service on a domain controller.
The Netlogon service on a domain controller performs various A record registrations:
- A record(s) for the DnsDomainName for a domain controller
- A record(s) for the gc._msdcs.DnsForestName if the domain controller is also a global catalog
You can disable this behavior by using the RegisterDnsARecords registry key.
The RegisterDnsARecords registry key disables all A record registrations performed by Netlogon, but the registration of gc._msdcs.
DnsForestName A record(s) is required. Therefore, these record(s) must be added manually in the appropriate DNS zone.
For example:
gc._msdcs.<mycompany>.com A 192.168.100.120
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