Hi Guys, I am running a Exchange 2000 server and every now and again some users try to open their mailbox through outlook and they get a wrong password message, even though it hasnt been changed. To fix this, on the server I have been rechanging the users password in Active Directory Users and Computers. After I do this the user logs into Outlook with no problems. Any ideas on what is going on here and how to fix it? Thankyou in advance for any replies. Aaron