Hi, > Well is no other workstation needs LDAP then only allow connections from > your workstation. I looked on my exchange 5.5 box and don't see a method > to limit the query to a domain. I do see the ability to set the search > base in Outlook XP. > > My guess would be that the permissions need to be set within AD itself, but > I don't have a place to test the theory. Allowing LDAP to certain IP's is a good idea, but I can;t seem to find a way to control LDAP access. I checked everywhere in AD and Exchange Manager as well, and did not see any place I can "control" LDAP. Anyone know where exactly is LDAP enabled/disabled in the Exchange Server, and how can I put security restrictions on it? best regards Mike