It could be an event sink. Use the article below to pipe your sinks to a text file then search the text file for the email address.
Exchange: How To View All Registered Event Sinks
11130 Sunrise Valley Drive, Suite 300
Reston, VA 20191
Someone has setup what look to me to be a server side rule to send a copy of emails from an exchange contact to a mailbox. The mailbox has been deleted, but the rule still exists and not quite sure were to disable it.
Is there a way to see all server side rules from within systems manager and modify them accordingly
Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now.