Cisco Cisco Email Security Appliance C170 Guida Utente

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Cisco IronPort AsyncOS 7.1 for Email Configuration Guide
OL-22158-02
Chapter 5      Configuring the Gateway to Receive Email
listeners are created: a public listener to serve inbound connections on one 
interface and a private listener to serve outbound connections on a second IP 
interface. 
 illustrates a typical Email Gateway configuration created by the 
System Setup Wizard (or CLI 
systemsetup
 command) on an IronPort 
C10/C100/150/160 appliance. One public listener on a single IP interface is 
created to serve both inbound and outbound connections.