Re: [dmarc-ietf] Comment on draft-ietf-dmarc-psd

Tim Wicinski <tjw.ietf@gmail.com> Mon, 09 December 2019 01:58 UTC

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References: <CADyWQ+HparFd6ubzr46mo63=oSrRqu1cjo0Xq=ZpERn+Yxx3=Q@mail.gmail.com> <20191208215820.C83C11040D80@ary.qy>
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From: Tim Wicinski <tjw.ietf@gmail.com>
Date: Sun, 8 Dec 2019 20:58:10 -0500
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To: John Levine <johnl@taugh.com>
Cc: IETF DMARC WG <dmarc@ietf.org>
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Subject: Re: [dmarc-ietf] Comment on draft-ietf-dmarc-psd
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+1

Tim
(just a fan of
https://www.ietf.org/archive/id/draft-levine-dbound-dns-03.txt)

On Sun, Dec 8, 2019 at 4:58 PM John Levine <johnl@taugh.com>; wrote:

> In article <CADyWQ+HparFd6ubzr46mo63=oSrRqu1cjo0Xq=ZpERn+Yxx3=
> Q@mail.gmail.com>; you write:
> >So we could decide on doing a combinatory of #3 and #1, with the right
> >mechanisms.
>
> Publishing a list of PSD superdomains in the DNS is pretty trivial
> using my dbound scheme, and should typically find out whether any name
> needs a PSD check with one DNS query.  The total zone for the PSL is
> under 10K records, so doing a local mirror should be easy, too.
>
> R's,
> John
>