It appears that Dave Crocker <dcroc...@bbiw.net> said: >-=-=-=-=-=- > >On 1/31/2025 7:58 AM, John Levine wrote: >> Has anyone ever implemented it? I've never heard of anyone doing so. >> >> On the other hand, I've done From header unmungers that know about the >> particular >> munges that some lists do, and would like it if there were a more general way >> to do that. > >In a discussion about creating a complex, untested technology, to be >used at scale, asking about whether a far simpler approach that is >already published and uses a very well-established method has been >implemented before seems oddly counter-productive.
Two and a half points: my unmungers are just a proof of concept. I can think of all sorts of reasons it wouldn't work at scale, ranging from too many different ways that lists munge to a variety of malicious things that look like address munging but aren't. More to the point, the whole point of making mutations reversible is so that recipient systems can recover the original signed message and intermediates can leave the From header alone, only making changes that they consider useful, like subject line tags, rather than defensive ones to avoid DMARC failures. R's, John _______________________________________________ Ietf-dkim mailing list -- ietf-dkim@ietf.org To unsubscribe send an email to ietf-dkim-le...@ietf.org
