Cisco Cisco Email Security Appliance X1050 Technical Manual

Contributed by Jerry Orona, Andy Lau, and Robert Sherwin, Cisco TAC
Engineers.
Jun 11, 2014

Introduction
Configure
     Private Listener
     Public Listener
Verify
Troubleshoot

This document describes how to relay outbound traffic on the Email Security Appliance (ESA).

The ESA GUI provides a convenient interface with which to configure outbound relay hosts. You can
configure relay hosts in the Host Access Table (HAT) if you click the Mail Policies tab and navigate to the
HAT Overview menu item. In a standard configuration, hosts relay from your system over a private listener.
You can also choose to relay over a public listener. In each case, select the appropriate listener from the
Listener drop−down menu in order to display the Sender Groups for that listener.

When a private listener is configured, click the RelayList hyperlink in order to edit this Sender Group.

1. 

From the Edit Sender Group page, you can add senders to the RelayList Sender Group by IP address,
IP Range, Host or Domain Name, SenderBase Reputation Score, or DNS list.

2. 

Once you have added your host to the RelayList, that host is allowed to relay mail through your ESA.

3. 

When you relay through a public listener, no RelayList SenderGroup or Mail Flow Policy exists. Therefore,
you must manually add them.

Complete these steps in order to manually add Sender Groups:

Under Mail Flow Policies, click Add Policy.

1. 

Assign a name to the policy and choose Relay from the Connection Behavior drop−down menu.

2.