Cisco Cisco Email Security Appliance C190 Guida Utente
5-5
Cisco AsyncOS 8.5.6 for Email User Guide
Chapter 5 Configuring the Gateway to Receive Email
Working with Listeners
Figure 5-3
Public Listener on Appliance Models with Only Two Ethernet Interfaces
Ethernet interface: Data 2
IP interface: MailNet (e.g. 192.168.2.1)
Public Listener:
“MailInterface”
SMTP
Cisco Email
Security appliance
Groupware server /
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 and to relay messages from internal systems in the
interface on the Data2 Ethernet interface to accept messages from the
Internet and to relay messages from internal systems in the
.example.com
domain.
IP interface MailNet sends messages to destination hosts on the Internet
and to internal mail hosts.
IP interface MailNet sends messages to destination hosts on the Internet
and to internal mail hosts.
Message generation system