That isn't the Message-Id, that is the X-MS-Exchange-CrossTenant-Network-Message-Id... The Message-Id is compliant.
On Wed, Oct 25, 2017 at 11:43 AM, Rupert Gallagher <r...@protonmail.com> wrote: > The raw e-mail in pastebin returns a non-well-formed Message-ID. I attach > a photo of what I see. > > Sent from ProtonMail Mobile > > > On Tue, Oct 24, 2017 at 10:05 PM, John Hardin <jhar...@impsec.org> wrote: > > On Tue, 24 Oct 2017, Rupert Gallagher wrote: > Easy one. The Message-ID is > not well formed / RFC compliant. We reject such junk upfront. How so? That > looks totally valid to me... < dot-atom-text @ dot-atom-text > The line > break between the header and the ID is unusual, but not invalid. That might > potentially be a usable spam sign. > > -- - Markus
