It appears that Jesse Thompson <z...@fastmail.com> said: >Why not turn off rewriting on this list, as an experiment? The hypothesis is >that everyone will switch to Gmail and not tilt >at IETF, but instead they will tilt at their domain owners.
That's how we got here. A lot of IETF participants use mail systems that enforce DMARC policy (notably including Gmail) and we were getting a lot of complaints about lost mail, and a lot of work with people getting bounced off lists who list managers had to resubscribe. Barry says that even with our mitigations, we still have the latter problem. We went through a long list of possible workarounds including several kinds of rewrites and several kinds of message wrapping. They all stauk but the one we picked, per-address rewrites for domains with DMARC policies, stunk less. The option we picked requires more control over the MTA than typical mailman or sympa installations have, so most people's options are worse. I still don't understand the point of this argument. We all agree that DMARC causes damage to interoperability, but some people appear to be saying we should ignore it or pretend it doesn't exist because DMARC has other advantages. The honest thing to do is to describe both. Nobody thinks we're going to get Yahoo to turn off p=reject (they said at the time they turned it on that they don't care about mailing lists) but I think there's some hope we can get large mail systems to be more aware of the damage and use ARC or whatever to mitigate it. R's, John _______________________________________________ dmarc mailing list dmarc@ietf.org https://www.ietf.org/mailman/listinfo/dmarc
