Cisco Cisco Email Security Appliance C680 用户指南

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5-5
Cisco IronPort AsyncOS 7.6 for Email Configuration Guide
OL-25136-01
Chapter 5      Configuring the Gateway to Receive Email
Figure 5-4
Public and Private Listeners
 illustrates a typical Email Gateway configuration created by the System Setup Wizard Setup 
Wizard (or CLI 
systemsetup
 command) on Cisco IronPort X1050/1060/1070, C650/660/670, and 
C350/360/370 appliances. Two 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 Cisco IronPort C150/160 appliance. One public listener on a single IP 
interface is created to serve both inbound and outbound connections. 
Private Listener 
IronPort Email 
Security appliance
Public Listener 
Internet:
Hosts:        Many
Recipients: Limited
Internal Network:
Hosts:         Limited
Recipients: Many