[delete junk mail] How to delete a mail?

hi all,
I haven't time, and I know you are guru in work with procmail. So I can 
ask for these problems:

1)What I must append to rc.maillists, so that I can delete immediatly 
mail from some one? 

2)How can I indentify the different between fields "Message-Id:" and
"From:", so that you see that you've got a "junk mail", and you can delete
it immediatly. How you implement it in procmail?

for example see:
From: Vu Quoc Hu`ng <hung(_at_)vsb(_dot_)cz>
                         ^^^^^^^ 
Message-Id: 
<Pine(_dot_)ULT(_dot_)3(_dot_)91(_dot_)970929103000(_dot_)16544A-100000(_at_)decsys(_dot_)vsb(_dot_)cz>
                                                             ^^^^^^^            
                                
You can see two fields contains the same host vsb.cz, it mean this mail is 
from a confidental people, so you will not delete it.

Please get me a copy of answer to:
                                                hung(_at_)vsb(_dot_)cz(_dot_)
+---------------------------+----------------------------------------+
     "Bill Gate's daughter will be the best product from MS".

Thank you very much.