Host name change notification from System Administrator root@server.com
I was having the same problem &amp; found this thread on Apple Support Communities.

The short of it is that unless the name change is done through the command line with sudo changeip, it will forever complain about the change. The command goes like this:

sudo changeip OLDIPADDRESS NEWIPADDRESS OLDNAME NEWNAME


Use the same IP address and name in both spots and it's happy.