How to Forward email in Exchange 2003 and 2007
For Exchange 2003:
Open the user’s properties under Active Directory Users and Computers.
Click on the “Exchange General” tab.
For Exchange 2007
Open Exchange Management Console -> Right Click on a user Properties -> Click Mail Flow Setting -> Select Delivery Options -> Forwarding address
[...] Open Exchange Management Console -> Right Click on a user Properties -> Click Mail … Source Related [...]