Just a guess, but remove the literal "MADNESS: " from the list
title and add it (if it isn't already there to the list definition
keyword "LIST-ID= ".  Doing the above will reduce the SENDER field
by removing the redundancy of the userid (MADNESS) and the list
title (comment).
 
Using the LIST-ID keyword will aid in various lists-of-lists searches.
 
This message brought to you by the Dept. of Redundancy Department ;-)
 
/Pete