On Thu, Apr 17, 2014 at 2:04 PM, Miles Fidelman
<[email protected]> wrote:
> Not sure who wrote this anymore:
>>>
>>> At one time I suggested adding a feature to list domains that could
>>> be considered "in alignment" with yours. So if a domain owner wanted
>>> to authorize an email service provider, they could just add something
>>> to their DMARC policy to specify the domain the ESP uses for SPF/MailFrom
>>> and/or DKIM signing. I am still curious what's wrong with this proposal.
>>> It seems to me to cover Vlatko Salaj's use case, and would certainly be
>>> easier to implement than arranging to share a DKIM key.
>
>
> That seems like it would only work if one is designating only one, or a
> small number of ESPs.  It doesn't seem to address the mailing list case -
> Yahoo's subscribers, en masse, belong to a huge number of lists, hosted all
> over the place.  Which scales about as poorly as SPF (if you do mailing
> lists, you end up back at v= +all.
>
> So we're back to managing whitelists.
>

I agree that it does not solve the mailing list case. It solves at
least two other cases. If someone has a solution that solves all
cases, I will gladly forget about this solution.

Regards,
Joe H

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