Correct. Pattern to creation the mailbox to user, should be details below as you mentioned. But staff name as your attached file is 'Panadda Ritthiruengdej' and email address is 'panadda@rclgroup.com'. She has resigned from our company already since 06/08/2013. Since that time until now, still don't have anyone use that name and email address duplicate in our existing Teamware directory. I think we should use that details as per K.Suwat has informed you previously.