I am adding new mailboxes for users in our exchange server 2013 . I went to add a users mailbox using the Existing users and the list it provides does not show some users AD account? How do I create a mailbox for existing user if the name does not appear in the list, or how do I get his name to appear in the list. Also I can't delete the existing user . As all the users are configured with roaming profiles. I have some 20-30 domain users not showing up when creating the mail ids for them.
Please help me in resolving this issue