Re: [dmarc-ietf] not ADSP, was is DMARC informational?

John Levine <johnl@taugh.com> Mon, 07 December 2020 05:18 UTC

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Date: 7 Dec 2020 00:18:46 -0500
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From: "John Levine" <johnl@taugh.com>
To: dmarc@ietf.org
Cc: superuser@gmail.com
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Subject: Re: [dmarc-ietf] not ADSP, was is DMARC informational?
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In article <CAL0qLwb3pLVFkOiuKeY38Kk9wEiesbyZCiBy72Ls5yRwN6EpdQ@mail.gmail.com> you write:

>As I recall, people took a run at trying ADSP and it was largely
>unsuccessful.  I recall at least Yahoo, PayPal, and Google trying it but
>finding that it interfered with their employees' participation in lists, so
>they each invented new domains for their employees to use as separate from
>their operational public services.  This basically led to its demise.

Among ADSP's shortcomings was that there was no way to test it other
than to turn it on and see how much damage it caused.  The answer was
frequently a lot, so they turned it back off and that was that.

DMARC certainly has its problems but the reporting is great. It makes
the surprises when you turn DMARC on a lot less, at least if your name
is not AOL or Yahoo. 

R's,
John