Configure mail service for the appliances you have selected. To add more appliances to the Selected servers list, click Select more. You can also stop and start mail service on selected appliances.

To have outgoing mail sent through a central relay server, specify a Smart Relay Hostname. Use reject and RBL options to strengthen security for the appliances' mail service. Remember to separate multiple domain names with a semi-colon (;).

Enter maximum files sizes to limit bandwidth usage by incoming and outgoing mail messages.

When you have defined mail service settings, click Apply to Selected Servers.