On 2021-04-07 11:09, John Levine via mailop wrote:
It appears that Laura Atkins via mailop <[email protected]> said:
Forcing alignment across all 3 entities (5321.from, 5322.from and the
d=) breaks a lot of current implementations. Many ESPs and a ton of
small businesses
are going to be scrambling to get this implemented.
It's also specifically contrary to the DMARC specification. As you
say, it doesn't interoperate with anyone else.
Hopefully, Florian can answer some of my questions about the double
signature and clarify what they’d like.
I'd like to understand whether they just misunderstand what DMARC
says, or if they are deliberately inventing their own "more secure"
version and expecting the world to change.
I'd bet on the latter.
These are the same folks that required that reverse DNS for my unused,
unassigned, not assigned to an interface, not reachable, IP addresses,
be to their liking before they would accept mail from my new address
space. unassigned.irbs.net was not an acceptable name.
And yes, the addresses that actually send mail had proper forward and
reverse DNS.
John Capo
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