On Mar 04, Baptiste Beauplat <lykn...@cilg.org> wrote: > Looking at your email headers, I would guess that gmail is already doing it. > > X-Google-DKIM-Signature: v=1; a=rsa-sha256... > > There is somewhat some irony in Gmail blocking email without a DKIM > signature while they are using a non-standard header that other > provider/tools might miss. Just a thought. No irony, you are just missing the point. gmail uses this X header for internal purposes, and there is no DKIM signature because the message has a @debian.org 822.from address hence gmail obviously lacks a valid key for it.
-- ciao, Marco
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