This section describes how Communications Express uses the two-DIT mechanism.
When Communications Express searches for user/group entries, it first looks at the user/group’s domain node in the DC Tree and extracts the value of the inetDomainBaseDN attribute. This attribute holds a DN reference to the organization subtree containing the actual user/group entry.
Using this model, Communications Express can support entries stored in any type of directory Tree, provided that a domain component node in the DC Tree points to the node in the Organization Tree under which the users for that domain can be found.