[ietf-dkim] DKIM+ADSP = FAIL, and it's our fault

[Graham Murray]

"McDowell, Brett" <bmcdowell at paypal-inc.com> writes:

> BTW, one thing I think we can agree on and find value from in these
> pre-deployment email discussions is terminology.  I ran into a problem
> at the last MAAWG during a panel discussion where my understanding of
> "3rd-party signature" is what someone else meant by "2nd-party
> signature".  What is the real definitions of "1st-party", "2nd-party"
> and "3rd-party" signatures in the context of DKIM and ADSP, i.e. in
> the context of i= and d= and from: values?

To apply the 'normal' and commonly used in other contexts (eg contracts
and insurance) definitions.

The sender is the first party.

The recipient(s) jointly and individually are the second party.

Anyone else is a third party.

I have never heard anyone talk about 2nd party signatures.