Forest added the comment: RFC 2046 says that the outer message is defective, since it uses a boundary delimiter that is quite obviously present inside one of the encapsulated parts:
https://tools.ietf.org/html/rfc2046#section-5.1 "The boundary delimiter MUST NOT appear inside any of the encapsulated parts, on a line by itself or as the prefix of any line." ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue25728> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com