We are running Windows Server 2008 Standard 64bit. We have 2 sites (main office and colo). Initially we had 3 domain controllers. 2 are here at the main office and 1 at the color. We decided to promote a new DC at the colo for redundancy over there. This was about 2 days ago. Now I noticed that zone entries are disappearing for various servers.
When I promoted the new DC, I let it configure DNS automatically. It was pretty much a default straight forward installation of active directory. Nothing special was done. I'm able to replicate to all servers within Sites and Services without any foreseeable issues.
any ideas?