Hi... Assuming that normal mailflow between domain1.com and domain2.com is working fine.. you can set the delivery option to accomplish this task. >Got to the properties of usera@xxxxxxxxxxx >Click on Exchange General tab >CLick on Delivery option >Spcify usera@xxxxxxxxxxx in the forward top option >You can also check devliver messages to both forwarding address and mailbox. Hope this answers your question Manoj