Re: [dmarc-ietf] tree walk and Org and PSD, Second WGLC for draft-ietf-dmarc-psd

"Murray S. Kucherawy" <superuser@gmail.com> Sun, 22 November 2020 06:07 UTC

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From: "Murray S. Kucherawy" <superuser@gmail.com>
Date: Sat, 21 Nov 2020 22:06:56 -0800
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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] tree walk and Org and PSD, Second WGLC for draft-ietf-dmarc-psd
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On Sat, Nov 21, 2020 at 6:23 PM John Levine <johnl@taugh.com> wrote:

> It is my impression that most real From: domains are pretty short. I
> don't think I've ever seen one more than four labels long that wasn't
> deliberately contrived. Anyone got data on that?
>

I'd bet there are some in .gov or .mil, especially the latter, but
otherwise I think the longest one I've seen is five, and that was not a
host that receives mail.

I'm sure we can all scrape our own mail logs for evidence either way.

-MSK