On 1/29/25 3:54 PM, Wei Chuang 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.On Wed, Jan 29, 2025 at 3:24 PM Michael Thomas <m...@mtcc.com> wrote: On 1/28/25 7:38 PM, Wei Chuang wrote:I would propose that the latest charter has latitude to try both the broad and narrow approaches for "reversible transformation", and I believe that's a good thing. I would like to see both directions pursued as each has their pros and cons, and some of the cons might not be so apparent till some operation experience is acquired. Or at the least, there should be a meaningful technical discussion of the proposals and merits after this step because of the prohibition against technical discussion currently. Basically I'm saying let's not rule anything out because we don't know what the proposals and their merits are.I mean, we're basically talking about ~diff(1), right? It's certainly tractable in that context, but what may be problematic are maximum header sizes in implementations. But realistically the things that would implement this (eg, mailing lists) probably aren't going to be doing something horrible like re-encoding an mp4 file or something like that where you'd end up with gigantic header.Right, the more general approach would use something like diff, and indeed a potential downside is the header size expansion. The simpler alternative might be some encoding that specifically supports mailing list footer additions that could be expressed as offsets from the message bottom or some specified delimiter.
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.
Mike
_______________________________________________ Ietf-dkim mailing list -- ietf-dkim@ietf.org To unsubscribe send an email to ietf-dkim-le...@ietf.org
