On Tue, Jun 16, 2020 at 09:28:11PM +0200, l0f...@tuta.io wrote: > Hi, > > 16 juin 2020 14:50 de recovery...@enotuniq.net: > > > And *now* it gets interesting. Because what's came to the list was text: > > > > Message-ID: <m9j2pgk--...@tuta.io> > > Content-Type: text/plain; charset=UTF-8 > > Content-Transfer-Encoding: quoted-printable > > > Can we imagine that the ML simply 64-decodes the email and resent it as > text/plain?
That's possible. But the e-mail in question was also DKIM-signed (including the body), so such transformation would lead to DKIM failure. And it did not happen. Reco