On Thu, May 20, 2004 at 10:49:41AM -0400, Ring, John C wrote:
> >From: Tony Finch [mailto:fanf2@hermes.cam.ac.uk]On
> >
> >You seem to have missed the fact that SPF breaks existing
> >working legitimate setups.
>
> True, it does break forwarding, and would require a change to "remailing"
> (As termed by http://spf.pobox.com/faq.html) to keep that type of
> functionality.
>
> But according to http://antispam.yahoo.com/domainkeys#a12, "Mailing lists
> that do not change the content or RE-ARRANGE or POST-PEND headers will be
> DomainKey compatible with no changes required. Mailing lists that CHANGE THE
> MESSAGE AND HEADERS should re-sign the message with their own private key
> and claim authorship of the message." (emphasis added)
>
> Don't most mailing lists[1] and/or forwarding setups made such changes? If
> so, without changes, this proposal also breaks a lot of currently working
> setups. So in that regard, both proposals seem approximately even.
Most mailing lists do; most forwarding setups do not. I'm not sure
whether most mailing lists use an envelope sender of the original sender
or the mailing list; if the latter then there should be no problem.
Jim
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