Cisco Cisco Email Security Appliance C170 Guía Del Usuario
Chapter 5 Configuring the Gateway to Receive Email
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Cisco IronPort AsyncOS 7.1 for Email Configuration Guide
OL-22158-02
Figure 3-4 further illustrates the differences between the default settings of public
and private listeners. A public listener is intended to receive email from the
internet. The public listener receives connections from many hosts and directs
messages to a limited number of recipients. Conversely, a private listener is
intended to receive email from your internal network. The private listener receives
connections from a limited (known) number of hosts and directs messages to
many recipients.
and private listeners. A public listener is intended to receive email from the
internet. The public listener receives connections from many hosts and directs
messages to a limited number of recipients. Conversely, a private listener is
intended to receive email from your internal network. The private listener receives
connections from a limited (known) number of hosts and directs messages to
many recipients.
C10/100 customers: By default, the System Setup Wizard walks you through
configuring one public listener for both receiving mail from the Internet and for
relaying email from your internal network. That is, one listener can perform both
functions.
configuring one public listener for both receiving mail from the Internet and for
relaying email from your internal network. That is, one listener can perform both
functions.
Later in the chapter, these differences will be demonstrated in the Host Access
Table and Recipient Access Table for each type of listener.
Table and Recipient Access Table for each type of listener.
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 IronPort
X1000/1050/1060, C60/600/650/660, and C30/300/350/360 appliances. Two
Private Listener
IronPort Email
Security appliance
Public Listener
Internet:
Hosts: Many
Recipients: Limited
Recipients: Limited
Internal Network:
Hosts: Limited
Recipients: Many
Recipients: Many