On 8/14/2023 10:53 AM, Jon Callas wrote:
The original statement from the Domain Keys folks from Yahoo was that when your bank sends an email to you, your ISP can know that, even though it's bounced through your alumni association.
I'm going to press this a bit. The alumni example involves the message getting to the place it was addressed to, and is then redirected to a new address. Some folk object to calling this delivery and reposting, but the previous statement is a technically precise statement of what happens.
Whatever the label given, it is not a scenario that is formally expected to survive, although in practice it usually does. It typically creates a new RCPT-TO without changing the message itself. Hence DKIM survives.
But this case is fundamentally different from classic MTA-MTA transfers. d/ -- Dave Crocker Brandenburg InternetWorking bbiw.net mast:@dcrocker@mastodon.social _______________________________________________ Ietf-dkim mailing list Ietf-dkim@ietf.org https://www.ietf.org/mailman/listinfo/ietf-dkim
