Hi, I am having a really strange issue with one user on an Exchange 2003 box and am scratching my head. All other users (some 120 user) are sending and receiving messages fine, except for this one user. When I send a message to the user (from remote, e.g. test messages from gmail or hotmail), there is no bounce. The Exchange server actually sees the message, and the message tracker also shows the message in it's logs and apparently claims that the message was delivered to the user. But the user's mailbox always shows "no messages". Event logs do not show any errors. The user does not have any filters or anything else configured in Outlook that is swallowing the mesage (I confirmed this by changing the password so even if the user had something wierd configured in their Outlook, they would be blocked from pulling the message down anymore). OWA also shows an empty mailbox. The user is able to send messages, but not receive. It's almost as if the message is arriving at the exchange server, and is being acceptted for delivery to the local user, and then disappearing into some black hole. Very odd. Any ideas where I should look next? Mike