On Thu 07/Oct/2021 00:32:30 +0200 Douglas Foster wrote:
I can define three ways that a list can be reliably identified. The list bounce address is known to the evaluator, and: - The list bounce address is known to the evaluator and the message is DKIM-signed by the list bounce address. - The list bounce address is known to the evaluator, is the message's MailFrom address, and the message produces SPF PASS. - The list's server identities are known to the evaluator, and can be verified by IP address and/or Forward-confirmed DNS.
How come a list is known to the evaluator? I don't want to go hunting each and every mailing list I ever subscribed to, let alone pester my users for doing so in turn.
For wet dreams, I did outline a three-way opt-in whereby servers become aware when their users subscribe to mailing lists... Let's talk real.
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