In article <1265372281.9984.1601969016...@appsuite-gw1.open-xchange.com> you write: > It would be much better if there were a few professional/community efforts to > build reliable and complete lists of good > and bad ARC intermediaries, like for spam.
Having tried and failed to build a whitelist for Spamhaus, I can tell you that it's hopeless. The bar for ARC to be usable is pretty low. It's not "doesn't send spam" or even "knows who its users are." It's only "doesn't lie about where mail came from." I expect that in practice the usual DNSBLs will be good enough. R's, John _______________________________________________ dmarc mailing list dmarc@ietf.org https://www.ietf.org/mailman/listinfo/dmarc
