In our environment, we have exchange5.5 on WindowsNT4.0. we have a client running Windows 2000 Professional SR-1. The problem he gets is a strange one and sods law he is a director. When he sends a message, the message gets to the recipient but still shows in his outbox until he clicks on one of the other folders( i.e. contacts/notes etc) and he wont see any messages appear in his inbox then after afew minutes he will get a load of them or when he touches one of the other folders - then he will see a load flow through. Basically looks like outlook isnt refreshing itself. I have created a new profile and its ok - his profile on a new PC works fine. MTA on the server is ok. I am struggling to see what else to do. I would appreciate any assistance on this.