SMTP: Add option to not re-encode message on upload
I receive a message with Content-Transfer-Encoding: 8bit
(or one MIME part of it has this encoding). The message is DKIM-signed. I select from the menu Message → Forward As → Redirect. The sent message uses now Content-Transfer-Encoding: quoted-printable
or Content-Transfer-Encoding: base64
, which invalidates the DKIM-signature and DMARC fails.
Edited by Milan Crha