On Thu, Jul 13, 2023 at 3:40 AM Scott Kitterman <skl...@kitterman.com> wrote:
> >Google uses 5.7.26 for the purpose (and for SPF and DKIM rejects): > > > >https://support.google.com/a/answer/3726730?sjid=16541570162287939258-NA > > > >Their use of 5.7.26 seems in keeping with IANA - Multiple authentication > >checks failed - since in order to fail DMARC, both SPF and DKIM must fail. > > > > > https://www.iana.org/assignments/smtp-enhanced-status-codes/smtp-enhanced-status-codes.xhtml > > Since there is no DMARC code, that seems like a reasonable alternative, > but I do think something more specific would be better. It's possible for > both SPF and DKIM to pass, but still fail DMARC due to alignment, so it's > not strictly true that multiple failures are required. > Someone registering a DMARC-specific code, especially if someone plans to implement it (either as a producer or a consumer, and preferably multiple implementations), would be easy to support. -MSK
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