One user is reporting that intermittent e-mail from different senders over the last couple of months is gone from his Outlook and cannot even see the e-mail with Recover Deleted Items. The user also has a few e-mails he can see on his BlackBerry but not in Exchange. The user has a 7 GB mailbox but Outlook is not reporting any errors and no virus reported on his machine. How are random e-mails missing from this user's Outlook? Any assistance offered would be greatly appreciated.