procmail filter for mailinglist

[Jay Daniels]

I need an automatic procmail filter for list.  This does not seem to
work - for this list anyway.  What am I missing?

:0
* ^X-BeenThere_.*ubuntu-users@
lists.ubuntu-users/

:0                                    # Majordomo lists
* ^Sender: owner-\/[-a-zA-Z0-9_.]*
list.$MATCH/

:0 
* ^X-Mailing-List: <\/[-a-zA-Z0-9_.]*   # SmartList lists
list.$MATCH/


thanks,

jay

ps: I thought that procmail would auto create the folder, is this
correct?  I am using Maildir.