In article <b0f72407-81ce-9990-4a5b-7b0e5b76e...@mtcc.com>, Michael Thomas <m...@mtcc.com> wrote: >When I was at Cisco, with l= and some subject line heuristics I could >get probably like 90+% verification rate across the entire company, a >company that uses external mailing lists a lot. Definitely not 100% though.
I think you will find that at very large mail systems like gmail and Microsoft and Yahoo, 90% might as well be 0%. The volume of errors is just too high and the number of complaints would be impossible. While I almost never see the sort of spam leakage through mailing lists that Brandon reports, I believe him when he says it's enough of a problem that Gmail can't just whitelist traffic from mailing lists. R's, John -- Regards, John Levine, jo...@taugh.com, Primary Perpetrator of "The Internet for Dummies", Please consider the environment before reading this e-mail. https://jl.ly _______________________________________________ dmarc mailing list dmarc@ietf.org https://www.ietf.org/mailman/listinfo/dmarc
