On 3/21/2015 12:23 AM, Murray S. Kucherawy wrote:
> In particular, it does not matter what user's 'see'. The information is
> processed by a filtering agent, independent of the user.
>
> So what matters is that the From: field domain is the
> only field certain to be provided by the author.
>
> Isn't it important that this information is also the most likely to be
> presented to the end user as the author of the content that's also shown
> to the user? Why do you claim it doesn't matter?
>
> There would be a lot less incentive to be concerned about From:
> alignment if that were not the case.
It's important to distinguish between the initial reason people were
motivated to work on DMARC, versus what DMARC does.
Users do not process DMARC.
When talking about a protocol, talk about the entities
that process it.
From: happens to be the only place that always has the presence of a
domain associated with the origin. And note that without DMARC, these
days users typically don't see the domain. In other words, it isn't
presented to the user. This inconvenient fact is ignored or dismissed
every time someone touts the user's role in DMARC.
d/
--
Dave Crocker
Brandenburg InternetWorking
bbiw.net
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