One of our accounts on our Exchange 2003 server does not always receive emails. Unfortunately it's the boss' account. The emails that never arrive, seem to be mainly from one external source.
I've checked the SMTP logs and the emails appear there, I've also checked the Message Tracking Centre in the Exchange System Manager and they appear there, along with the message "Delivered Locally to ...", but they don't appear in the user's Outlook.
I've tried getting him to turn off his Blackberry and shutdown his PC, so we know nothing is interfering with the mailbox, then getting a test mail sent and checking via OWA, but the mail still doesn't arrive.
Is there anywhere else I can check for more information on where the emails have gone?