How to Make an Existing Active Directory Object a Recipient
Using Active Directory Users and Computers, you can create a new Active Directory object that can be mail-enabled or mailbox-enabled.
Creating a recipient using Active Directory Users and Computers
This procedure outlines how to make an Active Directory object into mail-enabled or mailbox-enabled recipient.
Procedure
To make an existing Active Directory object a recipient
In Active Directory Users and Computers, right-click the object, and then select Exchange Tasks.
On the Available Tasks page in the Exchange Task Wizard, select Create Mailbox or Establish E-mail Address.
Using Exchange Task Wizard to mail-enable or mailbox-enable an existing user object
Note
If Create Mailbox is not available, the object cannot be mailbox-enabled. However, if Delete Mailbox is listed instead, the object already has a mailbox associated with it. Each recipient can have only one Exchange mailbox.
For More Information
For information about programmatically creating recipients, download the Exchange Software Development Kit (SDK) or view it online from the Exchange developer center.