Cisco Cisco Email Security Appliance X1070 Guía De Información

ESA FAQ: How do you specify multiple destination
hosts with the alt−mailhost action?

Document ID: 117846

Contributed by Karl Young and Robert Sherwin, Cisco TAC Engineers.
Jun 25, 2014

Contents

Introduction
Prerequisites
Requirements
Components Used
How do you specify multiple destination hosts with the alt−mailhost action?

Introduction

This document describes how to specify multiple destination hosts with the alt−mailhost action on the Cisco
Email Security Appliance (ESA).

Prerequisites

Requirements

Cisco recommends that you have knowledge of these topics:

Cisco ESA

•

AsyncOS

•

Components Used

The information in this document is based on all versions of AsyncOS.

The information in this document was created from the devices in a specific lab environment. All of the
devices used in this document started with a cleared (default) configuration. If your network is live, make sure
that you understand the potential impact of any command.

How do you specify multiple destination hosts with the
alt−mailhost action?

After you apply the alt−mailhost, the ESA still uses the Simple Mail Transfer Protocol (SMTP) routes in order
to determine where messages are delivered.

This means that you can specify a Fully Qualified Domain Name (FQDN) within the alt−mailhost action and
then add an SMTP route entry with the specified FQDN as the receiving domain. The various destination
hosts are separated by commas, and they are used in a round−robin fashion in order to deliver messages to the
specified domain.