To write ADSI applications that access the Microsoft Exchange directory, you need an understanding of the Microsoft Exchange directory schema. The schema defines the available object classes in the directory, the relationships between the object classes, the attributes of each object class, and the specific characteristics of attributes and classes.
You can use the Microsoft Exchange Server Administrator program to view the Microsoft Exchange directory schema, and to view individual attributes and object classes.
To view the Microsoft Exchange directory schema
Start the Microsoft Exchange Server Administrator program in raw mode by using the /raw (or /r) switch. If the Administrator program is installed in the default location, you can start it by choosing Run from the Windows NT Start menu and using the following command line:
c:\exchsrvr\bin\admin.exe /r
From the View menu of the Administrator program, select Raw Directory.
In the hierarchy (left) pane, click the Schema object (the Schema object a is child of a Site object). The schema's objects are displayed in the right pane.
(Optional) To see information about an object's class and the values of its attributes, open the object's property sheet. To do this, double-click the object in the right pane, or click the object in the right pane and then choose Properties (or Raw Properties) from the File menu.