That doesn't mean that an ARC signature chain is a bad idea. I
have doubts about its effectiveness in practice, but, if it
help, that is great. But changing the intuitive (and
business-letter-based) semantics of the "From:" field strikes me
as a bad idea ...
It strikes pretty much everyone as a bad idea other than a handful who've
drunk too much DMARC koolaid, a group that does *not* include the ARC
authors.
The whole point of ARC is that lists do whatever they do now, and add ARC
headers for automated parocessing like they added DKIM headers a few years
back. None of the headers visible to users are supposed to change.
Regards,
John Levine, johnl(_at_)taugh(_dot_)com, Taughannock Networks, Trumansburg NY
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