[Mailman-Users] auto-discard message

[Christopher Adams]

Recently, I have had a couple of list owners who have sent messages to their
respective lists and received back the message
'The attached message has been automatically discarded'

In one case, the discard message and attachment is delivered to the list
members, but they still receive the intended message.

In another case, even a plain-text message with no attachments generates the
auto-discard message.

My first theories were that it was being discarded because of an all-caps
subject line, then because of an html message, but neither has proven to
work. Because of the inconsistency and the fact that one is getting through
on one list to subscribers and the other isn't, it is hard to troubleshoot.

Any ideas?