How can I prevent the backend infrastructure from being exposed in outbound messages?

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Updated:August 7, 2014
Document ID:118172

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Introduction

This document describes how to prevent the backend infrastructure from being exposed in outbound messages.

Solution

The following Message Filter will strip "Received" headers from outbound mail, giving the illusion that the Cisco appliance is the "last hop" before mail reaches the Internet:

strip-Received:
if (recv-listener == "Outbound"){
    strip-header('Received');
}

Revision History

Revision Publish Date Comments
1.0
07-Aug-2014
Initial Release
TAC Authored

Contributed by Cisco Engineers

  • Stephan Fiebrandt and Jason Sikorski
    Cisco TAC Engineers.

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