LDAP Features Within SmarterMail

The Lightweight Directory Access Protocol (LDAP) is, as the name implies, a lightweight client-server protocol that email servers, software and network appliances can use to connect to, and look up information from, a directory service. For example, LDAP can be used to look up information from Microsoft Active Directory.

For its part, SmarterMail acts as an LDAP client, not an LDAP server. That means LDAP can be used to integrate SmarterMail with Microsoft Active Directory for lookup and authentication services. The LDAP integration between SmarterMail and AD via LDAP is, therefore, one-way: SmarterMail can look up information within Active Directory but it can't send information TO Active Directory. 

That said, there are a few ways to use LDAP with SmarterMail, and it should be noted that LDAP integration will only function if SmarterMail is on the same domain as the LDAP server you are trying to connect to.
  1. As an authentication method against Active Directory, 
  2. As a lookup service for users within Active Directory,
  3. As a lookup service for aliases (i.e., finding out accounts that are part of a specific alias), and
  4. As a lookup for mailing list subscribers. 
Again, the integration between SmarterMail and Active Directory is one-way, which is why only lookups and authentication are available.