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Philip Hazel <ph10@???> [2004-02-23/16:57]:
> On Mon, 23 Feb 2004, Daniel Roethlisberger wrote:
> > As a general statement about multihop return path rewriting schemes,
>
> I haven't had time to follow this thread, but in case anybody hasn't
> noticed, multihop return path rewriting takes us right back to 1982.
> This quote is from RFC 821:
[...]
Indeed, but that's not what this is all about. Unfortunate recycling of
old terms, I guess. The discussion was about reversibly rewriting the
envelope sender on forwarded mail in order to only ever send mail with
local envelope senders, prime motivation being rather intrusive origin
verification schemes like SPF [1] which break verbatim forwarding. There
are various experimental approaches to this, each with its own problems.
The SPF folks have cooked up their own scheme called SRS [2], which
should give you an idea of what this heated topic is all about.
Cheers,
Dan
[1]
http://spf.pobox.com/
[2]
http://spf.pobox.com/srs.html
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Daniel Roethlisberger <daniel@???>
GnuPG key ID 0x804A06B1 (DSA/ElGamal)
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