In the near future I am going to remove two older servers form our Win2003 R2 domain. I have added the two newer systems to the domain. Transferred the FSMO roles. Installed DNS and they are all Active Directory-Integated. When I remove the older systems do I need to do anything to the DNS on the older systems? Remove them from the Name Servers tab in DNS? When the two older systems are removed from the domain there will be three DC’s. If they all are Active Directory-Integated is there one system that would be considered as the “master” DNS server? If so, how would I check that?
If all DNS servers are Active Directory-Integated would I need to have the Allow Zone Transfer box checked?