I am having a lot of trouble with Active Directory/DNS. I have three subnets with two domains originally setup under NT4. The first domain on subnet 1 was converted to Windows 2000 with Active Directory and DNS using two domain controllers. DC 1 is the Global Catalog server and DC2 is the Infrastructure Update Master. Subnet 2 is at a remote site connected through a VPN router. This site has a DC (DC3) for servicing logon requests for their local users and simply supplies file services. This site belongs to the first domain.
Subnet 3 belongs to Domain #2. I upgraded the DC (DC4) in the second domain and made it a child domain of Domain 1.
My questions are:
1.) Should the DC at the remote site (parent domain) and the DC on subnet 3 (child domain) each be GC servers?
2.)Should all the servers point to themselves as the Preferred DNS server?
3.) Are there any other special considerations for this type of environment?