On Wed, Jan 29, 2025 at 4:11 PM Michael Thomas <m...@mtcc.com> wrote:
> I've heard there exist MLM's that do weird stuff with MIME -- I may even > have a vague memory of seeing that back then. From memory, when I was doing > my experiments with l= and z= I was getting like about an 80% recovery > rate, so there was obviously more happening than just footers. > Unfortunately, it's been so long that I don't really remember much about > the particulars. You or others could obviously run the same kinds of > experiments to find out what's really out there these days. > > Maybe when all is said and done, we could write a BCP on what constitutes > a DKIM-friendly MLM, and why it's in its interest to be well behaved. > One of the things I wish DMARC had done early on is to strive to include MLM developers and operators in the discussions. That didn't happen, and I imagine those people are feeling a bit like they've been pushed all over the map by this work for the past N years. If we had involved them in DMARC early on we might be in a far better place than we are today, rather than having one segment of the pro-DMARC world seeing MLMs as part of the problem. Mea culpa for my part in the myopia of that momentum back then. So if we're going to produce such a document, I would insist that MLM folks be much more involved or at least consulted. By the time this group gets that far, I won't be an Area Director anymore, but if I'm going to co-chair it[1], I'll lean strongly that way. I don't think it's a big red flag to include this in the charter now -- the original DKIM working group produced RFC 6377, after all -- but there's also the argument that what we have in the charter now is plenty for starters, and rechartering is not a very expensive process. What do others think about this particular point? -MSK [1] This seems highly likely since, as I'm on my way out, the rest of the IESG has threatened to make me chair any new work I start up.
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