We are running Microsoft Exchange 5.5. We had an employee resign almost a year ago. But now we are continually receiving email for this user that has left. Most of the time the e-mails contain a virus that our antivirus program catches. Is there a way to not accept e-mail on this old users account at the Exchange level? As a last resort I could recreate the users account and create a rule to deny. The email originates from none existent e-mail accounts usually.