I found the problem arises for me if I send using Outlook Web Access (OWA), or Wanderlust mime-edit-insert-file. Sending using Icedove is OK.
Two test messages sent as requested. Please let me know what else you need. cheers, Simon -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org