Using LDP to find the base DN
Use the following procedure to search the Active Directory hierarchy.
Execute to log in to the Active Directory server.
Choose and enter the Server and Port number.
Choose and enter the Administrator for the User ID and then the password to authenticate the user access.
Choose to browse the Active Directory tree.
The Tree View window expects a entry. The Tree View displays a tree hierarchy with the settings of the users under the Base DN. Most environments have Exchange Objects located in:
CN=Services, CN=Configuration, DC=<yourdomain>, DC=com
Alternatively, try one of the following:
DC=<yourdomain>, DC=com
DC=<yourdomain>, DC=local
CN=Users, DC=<yourdomain>, DC=com
Example
If your domain is , your Base DN would be:
DC=support, DC=aptare, DC=com