This article applies to:

• Trustwave MailMarshal (SEG)
• Trustwave ECM/MailMarshal Exchange

Question:

Background:

Occasionally users complain about MailMarshal applying too many message stamps or legal disclaimers to an email message. With a message stamping rule, MailMarshal will stamp every new message regardless of whether previous replies (which are now incorporated in the new message) have already been stamped.

Message stamps are merely extra bits of text appended to the message body - they become part of the message. For example, if a new message incorporates six previous replies, it will show six message stamps - which can look untidy.  

Procedure:

1. Create a Text Censor Script to detect your Message Stamp
   • Create the text censor script with caution because it needs to be accurate enough to detect the message stamp, but the more words that are included in the text censor script the longer it takes to run the script.  So we don't really want to put the entire message stamp in the text censor script.
2. Create a Rule that says, if the Text Censor Script is triggered, bypass Stamping Rule
   
   Please also use caution when creating this type of rule as it is very important that only the appropriate rule is skipped. It is a good idea to create this rule as close to the bottom of the rule list as possible, preferably second to last and the very last rule will be the rule to stamp messages.
   
   So, if a message already has the message stamp it will trigger the text censor script and bypass the remaining rule (the message stamping rule).  If a message doesn't already have the message stamp, it won't trigger the text censor script and will be passed onto the next rule for processing (the message stamping rule).  
   
   The rule that runs just before the stamping rule should look like this:
   
   Standard Rule: Stamp
   When a message arrives
   Where the message is addressed to or from any user
   Where message triggers text censor script(s) AlreadyStamped
   Pass the message on and skip the next rule
   
   
   It is also possible to create weighted TextCensor scripts. This allows you to specify the maximum number of message stamps which can be applied to a message (such as 3), before the text censor script is triggered and the message stamping rule is bypassed. Trustwave Knowledgebase article Q10542 explains how to use weighted text censor scripts.

This article was previously published as:

NETIQKB29203

Marshal KB135