How to Automatically Discover Servers
By default, on each Exchange server, DSAccess automatically detects the appropriate domain controllers and global catalog servers in Active Directory for the Exchange server to query. This procedure outlines how to enable automatic discovery of servers.
Before You Begin
Because manually constructed topologies do not update automatically, it is strongly recommended that you use the Automatically discover servers setting.
Procedure
To automatically discover servers
In Exchange System Manager, right-click an Exchange server, and then select Properties.
On the Directory Access tab, select the Automatically discover servers checkbox.
Directory Access tab
Note
This checkbox is unavailable when All Domain Controllers is selected in the Show list.