I "inherited" a domain where I have the following situation:
A - the domain currently in use (Server 2003/2000)
B - an older sibling domain, not used anymore, whose servers were dismantled some time ago without deleting the domain
I need to add a new server to the "A" domain but the procedure fails because the server tries to connect to "B" and can't find it. Fact is, it seems I can't do anything to correct this, because the previous admins screwed up the permissions, granting full control to the Enterprise Admins of a THIRD domain called "C", which doesn't exist anymore (as for "B", the servers have gone but no one thought about deleting the domain) and removing some permissions for the other Domain Admins. No passwords (except for "A") are known by anyone. Not one of the older servers is still around. I already tried to take control of my domain and doing the metadata cleanup, without success.
Is there anything I can do to recover the existing domain, or would it be better to migrate everything to a completely new one?
Thanks a lot!