When you are migrating to a new server, sometimes you want it to answer to the name of the machine you are replacing. In windows 2003, a couple things have to be done to ensure users and applications will work properly when using the old name.
In addition to the normal DNS and WINS entries for alternate names, you will need to add the following registry entries (lines are wrapped for readability!):
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\
lanmanserver\parameters]
“DisableStrictNameChecking”=dword:00000001
“OptionalNames”=”myserver2″[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa]
“DisableLoopbackCheck”=dword:00000001
The server will need a reboot for the changes to become active.
if more than one additional name is needed, change the optional names to a multi-string value
more info: http://support.microsoft.com/kb/281308