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

2020-10-04 11:59:25
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

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