This happens because email is not a mandatory user attribute in Active Directory. But, from the Call Manager perspective, this is a required attribute. Without this field being populated, users will not show up in the Directory or Admin pages.
Follow these steps to populate the email field:
From a Domain Controller, open Active Directory Users and Computers: Start -> Programs -> Administrative Tools -> Active Directory Users and Computers. Select the user, Right-click and choose 'Properties'.
The user properties will then be displayed. Under the General tab, check to make sure the E-mail field is populated.
-Amisha
Cisco Systems
