Cisco Cisco Email Security Appliance C160 Mode D'Emploi

Configuring SMTP Routes in this step is optional. If no SMTP routes are defined, the system will use 
DNS to lookup and determine the delivery host for the incoming mail received by the listener. (See 

.)

You must add at least one domain to the Recipient Access Table. Enter a domain —

example.com

, for 

example. To ensure that mail destined for any subdomain of 

example.net

 will match in the Recipient 

Access Table, enter 

.example.net

 as well as the domain name. For more information, see 

When configuring your interfaces to relay mail, you define the systems allowed to relay email through 
the appliance.

These are entries in the RELAYLIST of the Host Access Table for a listener. See 

 for more information.

Mark the check box for Relay Outgoing Mail to configure the interface to relay mail. Enter the hosts that 
may relay mail through the appliance.

When you configure an interface to relay outbound mail, the System Setup Wizard turns on SSH for the 
interface as long as no public listeners are configured to use the interface.

In the following example, two interfaces with IPv4 addresses are created:

192.168.42.42 remains configured on the Management interface.

192.168.1.1 is enabled on the Data 1 Ethernet interface. It is configured to accept mail for domains 
ending in .example.com and an SMTP route is defined for exchange.example.com.

192.168.2.1 is enabled on the Data 2 Ethernet interface. It is configured to relay mail from 
exchange.example.com.

The following example pertains to the following appliances only: C370, C670, X1070, C380, C680. For 
C170 appliances, the Data 2 interface is typically configured for both incoming and outgoing mail while 
the Data 1 interface is used for appliance management (see