User Guide

40-13

AsyncOS 9.1.2 for Cisco Email Security Appliances User Guide

Chapter 40 Testing and Troubleshooting

Using the Listener to Test the Appliance

Figure 40-4 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™)

SMTP

Firewall

mail3.example.com> listenerconfig

Currently configured listeners:

1. InboundMail (on PublicNet, 192.168.2.1) SMTP Port 25 Public

2. OutboundMail (on PrivateNet, 192.168.1.1) SMTP Port 25 Private

Choose the operation you want to perform:

- NEW - Create a new listener.

- EDIT - Modify a listener.

- DELETE - Remove a listener.