On Wed, 11 Nov 2015, Rick Moen via luv-talk wrote:
If the list admin is worried about subscriber forgery then the list server can check SPF on incoming messages.
If I had my way, everyone would do SPF and be at least a little leery of DKIM / DMARC / DomainKeys. But rejections based on DKIM / DMARC / DomainKeys are nonetheless likely to start being a real pragmatic problem, and unfortunately is likely to require pragmatic measures.
Wouldn't the market solution to be to continue doing things from the technically correct point of view on infrastructure we maintain, and ignore companies that don't? yahoo senders, sending to a mailing list can't have their mail received by google recievers, and it's because yahoo are being silly regarding choice of standards? Easy. If the yahoo customers care about being listened to, then they'll change providers. -- Tim Connors