Re: [dmarc-ietf] non-mailing list use case for differing header domains

[Laura Atkins <[e-mail]>]

> On 28 Jul 2020, at 23:54, John R Levine <[e-mail]> wrote:
> 
>>>> Which verdict gets applied to the message?
>>> 
>>> I believe the reasoanble answer is both, and the filtering engine
>>> evaluates both based on their reputations.
>>> 
>> Two responses, two different but equally valid answers, the other (Dave's)
>> being "receiver discretion", which *could* be an umbrella term to include
>> John's answer, but would certainly also include other applications of rules
>> for this scenario.
> 
> I think Dave and I are agreeing here.  Assume I mean reputation in a very broad sense.
> 
>> will be wailed, teeth will be gnashed, and garments will be rent,
>> especially among those trying to do the right thing when sending email and
>> the deliverability people they employ.
> 
> I said to Autumn, I expect the number of people sending mail with Sender DMARC will be so small that the deliverability people won't notice.  And, of course, receivers will continue to do as they d* please, same as we've done for 40 years.

I’m not sure why deliverability people are even mentioned here. The problems with DMARC primarily affect one-to-one or one-to-few mails, not bulk mails. The breakage DMARC causes doesn’t really affect marketing, newsletters or anything else sent through automated systems. I mean, yeah, some folks aren’t going to get their bulk mails because of DMARC failures but mail fails all the times for lots of different reasons. 

DMARC broke how a lot of people and corporations use email as a communication medium and I, for one, welcome the attempts to finally address the fallout. I think if these issues are addressed more comprehensively you’ll see a much bigger adoption for DMARC, particularly among larger companies. 

laura 

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