Cisco Cisco Email Security Appliance C190 Guía Del Usuario
Chapter 1 Customizing Listeners
1-2
Cisco IronPort AsyncOS 7.1 for Email Advanced Configuration Guide
OL-22164-02
The following topics are described:
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Listeners Overview
The Network > Listeners page and the
listenerconfig
command in the CLI
allow you to create, edit, and delete a listener. IronPort AsyncOS requires that you
specify criteria that messages must meet in order to be accepted and then relayed
to recipient hosts — either internal to your network or to external recipients on
the Internet.
specify criteria that messages must meet in order to be accepted and then relayed
to recipient hosts — either internal to your network or to external recipients on
the Internet.
These qualifying criteria are defined in listeners; collectively, they ultimately
define and enforce your mail flow policies. Listeners also define how the IronPort
appliance communicates with the system that is injecting email.
define and enforce your mail flow policies. Listeners also define how the IronPort
appliance communicates with the system that is injecting email.
Each listener is composed of the criteria shown in
.
Table 1-1
Criteria for Listeners
Name
Unique nickname you supply for the listener, for future
reference. The names you define for listeners are case-sensitive.
AsyncOS will not allow you to create two identical listener
names.
reference. The names you define for listeners are case-sensitive.
AsyncOS will not allow you to create two identical listener
names.
IP interface
Listeners are assigned to IP interfaces. The IP interface is
defined by the
defined by the
interfaceconfig
command. Any IP interfaces
must be configured using the System Setup Wizard or the
systemsetup
command or the IP Interfaces page (or the
interfaceconfig
command) before you create and assign a
listener to it.
Mail protocol
The mail protocol to used for email receiving: either SMTP or
QMQP (only available via the
QMQP (only available via the
listenerconfig
command in the
CLI).