[MM3-users] Strange messages after upgrading Mailman3

Hi all,

I have been getting a few of these messages after my Mailman 3 was upgraded:

"The content of this message was lost. It was probably cross-posted to multiple lists and previously handled on another list."

The messages appear to come from list members and are distributed to the relevant lists, but with nothing of the original contents. They have appeared on different lists with, apparently different senders (unless spoofed). Other messages are going through the system unchanged.

Anyone has any ideas?

Yours,

Allan