----- Original Message ----- > From: "John Levine" <[email protected]> > To: [email protected] > Cc: [email protected] > Sent: Wednesday, April 1, 2015 11:11:14 AM > Subject: Re: [dmarc-ietf] Third Party Sender DMARC Adaptations > > >As I recall this was considered during the development of DKIM originally, > >exactly for this reason. We rejected it because we couldn't come up with a > >safe description of what a tag should look like. > > Yeah, that's what I recall, we couldn't figure out a way to allow benign > modifications without also allowing spammy ones. > > Has anyone looked at my double signing draft?
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