On Thu, Oct 23, 2014 at 2:04 PM, Hector Santos <hsan...@isdg.net> wrote:

> We always know that DMARC always fails on a SPF failure as well.
>
>    DMARC =  DKIM + SPF
>
> So any failure on DKIM or SPF is part of a DKIM failure.  If that is not
> TRUE, then it needs to be part of the discussion.  A SPF failure fails
> DMARC despite how verifiable the DKIM layer is.
>


This is completely incorrect and false. I'm not sure why the falsity of
this contention should be any part of the discussion. DMARC = DKIM ^ SPF
not DKIM & SPF.

--Kurt Andersen
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