What are the key words in a subject line that will make the 
majordomo software bounce the message to the listmom?

Certain key words in the subject line will cause the post to 
bounce only to the listmom and not go to the list at all, since 
the server will read those key words as a call for assistance.  
Some of those words are: HELP, SUBSCRIBE, UNSUBSCRIBE, QUESTION, 
and MAJOR.  If you need to include one of those key words in your 
subject line it's best to leave out a letter and substitute an 
asterisk (*), like this: H*LP  This
prevents the software from recognizing it and bouncing it.