How can I block spam mails in mailman

[sameer navas]

Hi, 
I configured mailman, and it is working fine. Now I
want to privitise my mailing list from public. That
means only specific domain users have  permission
tosuscribe the list. And also need to block spamming.
Please help me...

sameer


      ____________________________________________________________________________________
Looking for last minute shopping deals?  
Find them fast with Yahoo! Search.  http://tools.search.yahoo.com/newsearch/category.php?category=shopping