We have 7 specific GC's that are to service the Exchange 2k3 "only" LDAP
requests.

How does one prevent other applications when doing DNS A lookup record
queries and they get a list of domain controllers that include the 7 GC's
that we do not want them to use.

All I can find is ...
http://www.microsoft.com/technet/itsolutions/msit/operations/adforexchangenote.mspx

...it should make the 7 Exchange gc's a lower priority, but still listed as
a possible source for other apps to query

so is their a way to have 7 GC's not appear as a possible source for
non-exchange lookups ?

SRP