I have just upgraded from exchange 2003 to 2007. I have an issue with alias in exchange 2007. I have a mailbox (newly created) and it has 10 aliases . I created this aliases for our development environment .We parse the emails based on the received email address (alias) with a third party software using MAPI and save the data (attachment,body etc.) in access database for further manipulation . For instance ,We have mysystem@domain.com mailbox newly created .That mailbox and aliases existed on 2003 server because of the mooving error we deleted and recreate it 2007 server. If we receive an email for pictures@domain.com (alias) thats for our employee badge, if the email is order@domain.com (alias) that email for new order requirement.These emails goes to mysystem@domain.com mailbox .In exchange 2003 when we receive the email we could see the alias addresses (pictures,orders etc ) as received email not the primary email (mysystem@domain.com). When I updated exchange to 2007 server I can not see or get the aliases (parse the addresses ) any more.Is there any settings that I need to know in exchange or AD . is there anything to do with Microsoft Exchange Server MAPI Client and Collaboration Data Objects 1.2.1. Thanks for the help