Comment 5 for bug 418728

I still firmly believe that the lack of a specific reason is not a bug. It is my opinion that the list owner knows much better than any Mailman guess what the appropriate message is, and we give the list owner the ability to set it.

However, I am considering changing the default message for Mailman 2.2 to "Some or all non-subscribers are not allowed to post to this mailing list, and your message has been automatically rejected. If you think that your messages are being rejected in error, contact the mailing list owner at %(listowner)s."