IronPort - Configuration Guide - AsyncOS 7.6.1

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Cisco IronPort AsyncOS 7.6 for Email Configuration Guide
Chapter 5 Configuring the Gateway to Receive Email
Figure 5-5 Public and Private Listeners on X1050/1060/1070, C650/660/670, C350/360/370 Appliances
SMTP
Public Listener:
“InboundMail”
IP interface: PublicNet (e.g. 192.168.2.1)
Ethernet interface: Data 2
Ethernet interface: Data 1
IP interface: PrivateNet (e.g. 192.168.1.1)
Private Listener:
“OutboundMail”
Groupware server / Message generation system
Note This public listener uses SMTP
protocol on Port 25 of the
PublicNet IP interface on the
Data2 Ethernet interface to
accept messages from the
Internet.
IP interface PublicNet sends
messages to destination hosts
on the Internet.
IronPort Email
Security appliance
IP interface PrivateNet sends messages to
internal mail hosts.
Note This private listener uses SMTP
protocol on Port 25 of the
PrivateNet IP interface on the
Data1 Ethernet interface to
accept messages from internal
systems in the .example.com
domain.
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