On Fri 15/Oct/2021 21:33:30 +0200 John Levine wrote:
It appears that Baptiste Carvello <[email protected]> said:
Now, I'm skeptical of your solution. First, I don't think 100%
deliverability at all times is a hard requirement. ...
Since 100% deliverability at all times does not and cannot exist, it's just as
well.
That percentage is meant to be rounded to the nearest integer. I think I can
say I get 100% of dmarc-ietf messages, notwithstanding that 2010 and possibly
other hiccups.
That's due to most author's domains as well as the IETF itself having p=none,
plus me not enabling DMARC for those domains. In addition, DMARC has the
advantage over ADSP that SPF authentication suffices (which only works for
subscribers who need no forwarding, but I'm one.)
Could we do better authentication? For one point, after twelve years people
still sign mime-version:, content-type:, and content-transfer-encoding: so that
MLMs have to invalidate their signatures.
Best
Ale
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