In hope someone will look at my obvious bug report and confirm it after 1 year, here is another case where the sender didn't get his Receipt.
** Attachment added: "mdnmsg" http://launchpadlibrarian.net/25957906/mdnmsg -- Bare lf in mdn message from crashing thunderbird https://bugs.launchpad.net/bugs/233990 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
