Friends, I installed the Instant Messaging in an Enxchange 2000 Enterprise Server (with SP2) in a Windows 2000 Server (with SP3) and the Instant Messaging does not work!!!. I created the virtual RVP Server (like http://www.msexchange.org/tutorials/The_Exchange_2000_Server_Instant_Messaging_Service.html paper)!!!! The InstMsg virtual link in my Web Server is OK, but I haven´t the aliases directory in Exchange directory!!!! The Instant Messaging users information is OK in Active Directory... Please!!! Help me!!!!! []´s, Denis