Comment 1 for bug 194126

+1 to this, though it should be an option on the mailing list to restrict delivery to folks who are actually team members, and that option should IMO default to "true".

A case could also be made that it should default to true for teams that are moderated or closed, but open for teams that themselves are open, but that makes it harder to predict and also means that there will be weird interactions when the team status changes. So I think this should just be a checkbox on the mailing list admin page:

   [x] Deliver mail to subscribers who are not also members of ubuntu-dev.

Mark