>> There is a proposed standard, ARC, that would allow mail receivers to >> do more intelligent whitelisting. It's not ready yet. > There is a third option --- which is that if you want to participate on certain > mailing lists, you have to use a non-DMARC e-mail address. There are people > with google.com addresses that need to use non-Google addresses in order to > participate on the Linux Kernel Mailing List. I've seen comments that people who were on Yahoo can fortunately go to Gmail. What happens when Gmail publishes a p=reject like they said they were going to (even if the timeline is delayed), per https://wordtothewise.com/2015/10/dmarc-news-gmail-preject-and-arc/? Perhaps people can go to Outlook.com? What happens if they go to DMARC p=reject? Everyone can go an sign up for yet another domain? That just kicks the can down the road, but eventually that can will take no more kicks.