Cisco Cisco Email Security Appliance X1070 技術マニュアル
Contents
Introduction
Prerequisites
Requirements
Components Used
Background Information
What is Email Spoofing?
How to Detect Spoofed Email?
How to allow Spoofing for Specific Senders?
Configure
Create Dictionary
Create Message Filter
Add Spoof-Exceptions to WHITELIST
Verify
Verify Spoofed Messages are being Quarantined
Verify Spoof-Exception Messages are being delivered
Related Information
Related Cisco Support Community Discussions
Introduction
This document describes how to control email spoofing on the Cisco ESA and how to create
exceptions for the users to send spoofed emails.
exceptions for the users to send spoofed emails.
Prerequisites
Requirements
Your ESA should be processing both incoming/outgoing mails and should use a standard
configuration of RELAYLIST to flag messages as outgoing.
configuration of RELAYLIST to flag messages as outgoing.
Components Used
The information in this document is based on the ESA with any AsyncOS version. 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.
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.
Specific components used include:
Dictionary: used to store all your internal domains.
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Message Filter : used to handle the logic of quarantine spoofed email and dealing with the
exceptions.
exceptions.
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Policy Quarantine: used to store spoofed emails temporarily before deciding to release, or
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