4. How does the sending MTA know when to stamp this v=2 DKIM header? Presumably, it would need to have a list of known forwarders stored somewhere?
That seems likely, or else the DMARC group could hire someone to publish a list of known forwarders. Based on Yahoo's statements and Gmail's aggregate reports, they have a pretty good idea of who the forwarders are.
Oops, there's a real question. Should these forwarding signatures be RECOMMENDED or (REQUIRED) to have "full coverage" of message contents?
They're ordinary signatures. I don't think we need to invent new rules for them.
Regards, John Levine, [email protected], Taughannock Networks, Trumansburg NY Please consider the environment before reading this e-mail. _______________________________________________ dmarc mailing list [email protected] https://www.ietf.org/mailman/listinfo/dmarc
