Re: [ietf-smtp] EHLO domain validation requirement in RFC 5321

Arnt Gulbrandsen <arnt@gulbrandsen.priv.no> Sun, 04 October 2020 16:59 UTC

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From: Arnt Gulbrandsen <arnt@gulbrandsen.priv.no>
To: Keith Moore <moore@network-heretics.com>
Cc: ietf-smtp@ietf.org
Date: Sun, 4 Oct 2020 19:13:10 +0200
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Subject: Re: [ietf-smtp] EHLO domain validation requirement in RFC 5321
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On Sunday 4 October 2020 11:49:29 CEST, Keith Moore wrote:
> Please cite these "well established anti-abuse metrics" because 
> they should not be accepted as valid without question.

Actually, a significant set of email senders do question and do not accept 
them, so you're in a lot of company here, even if it may not be very good 
company ;)

But there's another aspect. Who accepts? These things are the content of 
.procmailrc files and sieve scripts. Who has authority to accept or not 
accept the validity of what I write in my sieve script? I believe that's a 
local matter, out of scope for the IETF, and therefore off-topic for all 
IETF lists.

Arnt