Networks

i have and exchange 2000 server running on windows 2000 sever. the issue is with active directory and exchange permissions. When i add a user in ad to have access to anothers mailbox the replication or the security takes about 2 hours to the user to access the mailbox.

Not sure but i remember a registery hack for this on exchange server. Does anyone know the key that needs to be changes to speed up security access to the exchange mailbox.

Thank you