What should the DNS Server settings be when restoring all DCs in a DMZ? (4275323)

 If you restore all DCs from backup you can leave this option in the automatic state, especially if one of the DNS servers is primary one or all other DCs and DNS servers. It is not recommended that you remove the primary DNS host from the recovery project or use the uninstall\reinstall AD option.

This setting is checked during the Verify Settings stage by emulating the creation of an a-type record for the DC on the specified or automatically chosen DNS server.