On Mon, Apr 10, 2023 at 8:15 AM John Levine <jo...@taugh.com> wrote:
> > For certain > >constrained but hopefully reasonable scenarios of mailing list > >modifications, we might be able to distinguish the sources of content. > > People have been suggesting this forwver, but it really doesn't scale. > There are a lot more list hosts with a lot more configurations that > any of us have individually ever seen. In many cases they add or > rewrite MIME parts which is extremely hard to unwind enough to see if > a DKIM signature would have been valid. > I have to agree. For as many times as this notion has been proposed, it's never been given serious consideration, and this is the reason: We can't possibly describe all the MLM mutations that exist, even if the mechansim for doing so is made extensible. I think the one thing we haven't discussed is: Could the 80-20 rule apply here? That is, if we start off with something like what draft-kucherawy-dkim-transform proposed (or even a trivial subset of it), might it make enough of a dent to get us through this stalemate, and then we can figure out what to do with the rest of it? -MSK, participating
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