Are you saying that gmail and yahoo have to know about my lists.sandelman.ca before I can have gmail/yahoo members on my little local list?
Yeah. It's clear from the DMARC summary reports I'm getting that the big mail systems already have a pretty good idea of where the mailing lists are, so it should be possible to pre-seed a whitelist so most people won't have to explicitly apply unless something screws up.
I agree this idea is not great, but all the plausible alternatives seem even less great.
Regards, John Levine, johnl@xxxxxxxxx, Taughannock Networks, Trumansburg NY Please consider the environment before reading this e-mail.