Cisco Cisco Email Security Appliance C690 User Guide

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Chapter 9      Testing and Troubleshooting
Using the Listener to Test the Appliance
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Cisco IronPort AsyncOS 7.5 for Email Daily Management Guide
OL-25138-01
Figure 9-4
Black Hole Listener for an Enterprise Gateway
In the following example, the 
listenerconfig
 command is used to create a black 
hole queueing listener named 
BlackHole_1
 on the Management interface. This 
Host Access Table (HAT) for the listener is then edited to accept connections from 
the following hosts:
  •
yoursystem.example.com
  •
10.1.2.29
  •
badmail.tst
  •
.tst
Note
The final entry, 
.tst
, configures the listener so that any host in the 
.tst 
domain 
can send email to the listener named 
BlackHole_1
.
Example
Groupware Server
(Exchange™, Domino™, 
IronPort Email Security Appliance
Groupware Client
Groupwise™)
A
B
C
SMTP
Firewall
mail3.example.com> listenerconfig
Currently configured listeners: