I want to start a web/nntp/e-mail forum, but want to make it so that
only registered users can view the messages already posted (whether
accessing past messages via web or nntp, or via rss/atom).

Wishlist for either:

A) the above to be done on group by group basis
or
B) at least for a whole account

Let me know if I've missed this and if there is a way to accomplish
either of the above already. (I do require registration to post via web
or nntp but anyone can currently view messages through either method;
haven't tried the e-mail list feature in a while)

Thanks,

Andrew

-- eMailman, LLC - Andrew Starr, President
eMailman(r): <http://www.emailman.com>
NewsReaders(sm): <http://www.newsreaders.com>
Discussion forums (via web or newsreader) at both of the above sites.