I see that this issue has been discussed in a few other postings - it seems to be affecting us here at the moment. We're running Mailman 3.3.5 inside maxking's mailman-core/mailman-web Docker containers (version 0.4.3).
This morning I composed a mail message and included two of our mailing lists in the To: field. On the first list I'm a member with address of the form my_addr_1@this.com. On the second I'm on it with a different address, my_addr_2@that.com.
In the case of each list, Mailman held the message for moderation. As administrator, I accepted both. I then got the full message in my inbox at my_addr_1@this.com, but in my other inbox at my_addr_2@that.com, the body of the message was not present. Instead it read
The content of this message was lost. It was probably cross-posted to
multiple lists and previously handled on another list.I'm wondering what's the best thing to do here. Should I maybe downgrade to an earlier version of Mailman (i.e. an earlier version of maxking's Docker containers), pending resolution of this issue ...?
Thanks for any advice. Stephen
PS: The Mailman web interface "System Information" link reports: Mailman Core Version GNU Mailman 3.3.5 (Tom Sawyer) Mailman Core API Version 3.1 Mailman Core Python Version 3.8.10 (default, May 6 2021, 06:30:44) [GCC 9.3.0]