How to use AD/LDAP for added domains ?
1. Login to EMA admin panel through web interface.
2. Go to Settings > Select Domains
3. Click on '+' button to add a new domain.
4. Select the *Type - LDAP for the added domain.
5. Click SAVE to submit the changes.
** Domain Type decides how you the userlist is maintained on EMA. By using LOCAL option you have to manually add users and by LDAP users get auto synce from mailserver.