Promoted a second server (Server2) to be a domain controller on a network with only one other DC (Server1). Both are running 2003R2 OS. DCPROMO completed. After which I installed DNS on Server2 - AD integrated and it populated the zones fine. Problem is that replication is not happening from Server1 (original server) to Server2 (secondary). In Sites and Services NTDS shows that Server1 has a connection to Server2 but Server2 NTDS dosn't show any connections. Also Sysvol is not shared. Should DNS have been installed on Server2 before promoting it to a DC? Would demoting and promoting Server2 now that DNS is installed possibly fix this issue?