Access the Server Manager and click the Preferences tab.
Click the Configure DNS Subdomains link.
The Configure DNS Subdomains page displays.
Select a resource from the drop-down list or specify a regular expression.
Select the number of levels from the Local Subdomain Depth drop-down list.
Click OK.
Click Restart Required.
The Apply Changes page displays.
Click the Restart Proxy Server button to apply the changes.