I've got a sub-domain setup on my network. On my arrival as admin, I decided that wasn't needed. hOwever it wouldn't remove properly, so I just removed the box from the LAN. (note, there weren't even any services, or roles to transfer, it was pointless to have a sub-domain)
I've gone through and deleted what I know using ntdsutil utility....
However the domain STILL shows up in the box for logon
Maybe someone can give me a step by step of how to remove an errant sub-domain and server?