Cisco Cisco Email Security Appliance C170 Referências técnicas
S M T P S E R V I C E S C O N F I G U R A T I O N
C H A P T E R 3 : T H E C O M M A N D S : R E F E R E N C E E X A M P L E S
251
S M T P S E R V I C E S C O N F I G U R A T I O N
This section contains the following CLI commands:
listenerconfig
Description
The listenerconfig command allows 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.
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.
These qualifying criteria are defined in listeners; collectively, they define and enforce your
mail flow policies. Listeners also define how the IronPort appliance communicates with the
system that is injecting email.
mail flow policies. Listeners also define how the IronPort appliance communicates with the
system that is injecting email.
Table 3-9
listenerconfig
Commands
Name
Unique nickname you supply for the listener, for future reference. The names you
define for listeners are case-sensitive. AsyncOS does not allow you to create two
identical listener names.
define for listeners are case-sensitive. AsyncOS does not allow you to create two
identical listener names.
IP Interface
Listeners are assigned to IP interfaces. All IP interfaces must be configured using
the
the
systemstartup
command or the
interfaceconfig
command before
you create and assign a listener to it.
Mail protocol
The mail protocol is used for email receiving: either ESMTP or QMQP
IP Port
The specific IP port
used for connections
to the listener. by
default SMTP uses
port 25 and QMQP
uses port 628.
used for connections
to the listener. by
default SMTP uses
port 25 and QMQP
uses port 628.