Cisco Cisco Email Security Appliance X1050 故障排查指南
ESA FAQ: How do I configure bounce verification
on the ESA?
on the ESA?
Document ID: 117918
Contributed by Khoa Nguyen, Cisco TAC Engineer.
Jul 11, 2014
Jul 11, 2014
Contents
Introduction
Prerequisites
Requirements
Components Used
Background Information
Bounce Verification Overview
How do I configure bounce verification on the ESA?
Prerequisites
Requirements
Components Used
Background Information
Bounce Verification Overview
How do I configure bounce verification on the ESA?
Introduction
This document describes how to configure bounce verification 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 these hardware and software versions:
Cisco ESA, 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.
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.
Background Information
This section provides an overview of tagging and bounce verification on the ESA.
Bounce Verification Overview
When an email is sent with bounce verification enabled, your ESA rewrites the Envelope Sender address in
the message. For example, MAIL FROM: joe@example.com becomes MAIL FROM:
prvs=joe=123ABCDEFG@example.com. The 123... string in the example is the bounce verification tag that
the message. For example, MAIL FROM: joe@example.com becomes MAIL FROM:
prvs=joe=123ABCDEFG@example.com. The 123... string in the example is the bounce verification tag that