Problem Authorizing DHCP Server

I'm having a problem authorizing a DHCP server in AD. I
can select in the menu to authorize the DHCP server and
later to unauthorize but in the log it keeps mentioning
that it is not authorized in AD. I've rebuilt the system
several times with several different names with no
success. I've also used other systems. I do have
another DHCP server that works just fine. The only thing
that distinguishes the two is that the one working was
installed and running before a Domain Rename. I've
looked everywhere since I think this is the cause,
something tweaked in AD but can't find where to look.
Any help would be appreciated, thanks.

Alex