[Mailman-Users] implicit? addresses?

[J and B]

greetings folks.. 
my question has no doubt been answered before I just don't seem to be able 
to find it:
so flinging myself on your mercy, I ask:
can one get mailman, which BTW is a lovely piece of software, to accept 
messages with undisclosed recipients in the too field??  Without my 
needing to go approve every single one.. if so, wherefore 
and how?? 
thanks a lot and sorry to be a pain, but since I gotta be something I 
may 
as well be that :-) 

-- 
Jack and Bakey :o)

"To make mistakes is human; to stumble is commonplace; 
to
be Able to Laugh at yourself is maturity." --William Ward