18Email Security Software
2.
3. Browse to the Delivery tab, and click the Advanced button.
4.In the Smart Host field, enter the FQDN on your SonicWALL Email Security appliance (such as, esa.example.com). Note: The Exchange Server must be able to resolve this host name.
5. Click OK.
On your SonicWALL Email Security appliance, in the Server Configuration > Network Architecture page, configure a separate, outbound path to handle the outbound email flow at the appliance (if not already configured).