We are running Exchange 2000 server with outlook 2002, when a user opens outlook and selects file and then selects open and selects other users folder that are able to look at others users inboxes on the exchange server and read their mail, how do I stop this? Is it an exchange or outlook issue?

Hi, This is an exchange issue - someone have added too many permissions to the users. http://support.microsoft.com/kb/328670/en-us