As you may have noticed, our mailing lists hosted by Codehaus
have gone away, because Codehaus has shut down.
After an unfortunate delay (JRuby 9000 is hard work!) we have arranged
for the new JRuby list to be hosted on ruby-lang.org. We believe it's
a good move to unify some of our project infrastructure with
ruby-core, and it's a simple mailman interface with a built-in
We are also going with a single list for all user and dev discussions.