Cisco Cisco Email Security Appliance X1070 Troubleshooting Guide

Contributed by Tomki Camp and Enrico Werner, Cisco TAC Engineers.

Jul 09, 2014

How do I stamp a footer / disclaimer on email messages leaving my network for a specific groups of users?

Many organizations want to place a footer on outgoing messages from their email system. This is typically
done for legal reasons, such as adding a disclaimer to the message or warning the recipient that the
message contains protected communications. In AsyncOS, this is called "footer stamping." 

Footer stamping is a fairly inexact art and is generally only useful for outgoing mail.  This is because many
messages have a complex structure, such as HTML or Microsoft Word body parts and adding a footer into
those body parts may or may not be possible. There are two steps to footer stamping.  First, the footer is
created.  Then, the footer is added to the message in one of three ways. 

First create the footer. In the GUI navigate to Mail Policies −> Text Resources, then click Add Text
Resource

1. 

Create an Outgoing Content Filter that has no Conditions (thus, it will be applied to all messages in
the Mail Policy) and has the action 'Add Footer' with the footer you created

2. 

Enable your footer stamping filter in the policy.

3. 

Tip: Although footer stamping can be done on the listener, or with a Message Filter or Content Filter, the
simplest way to do it for a specific group of users is as a Content Filter.

You can also add a footer on messages using a message filter:

AddOutgoingDisclaimer:

if     (recv−listener == "OutboundMail")

and (mail−from == ("@exchange\\.example\\.com$") {

  add−footer("Disclaimer");

}

You can also add footer to all messages received on a particular listener.  For example:

smtp.scu.com>listenerconfig

Currently configured listeners:

1. InboundMail (on PublicNet, 192.35.195.42) SMTP TCP Port 25

Public