I am not for closing the list. Just for filtering out the spam before
gets forwarded by the list. Other lists get this right, they are open
for everybody to post to, and filter out spam, so it never reaches the
subscribers. Just place spamassassin, or some other spam filter, before
the mailman handler.
I don't see the point of having it be open without requiring someone to subscribe ..
just seems non-optimum from the standpoint of having a functioning dialog.