Neil Shepperd <[email protected]> writes: > I think I have now accumulated enough spam/nonspam classified emails > to make a statistically signification observation: it seems like all > emails classified as spam from these lists were send from ipv6: > > SPF: PASS with IP 2600:3c03:0:0:f03c:91ff:fe61:86ce > > All emails from bufferbloat.net lists are failing DKIM (because of the > mailing list footer breaking the DKIM signature) which might be worth > fixing, and failing DMARC because all mailing lists fails DMARC > (however google does not have a strict DMARC policy so that shouldn't > matter, I hope). > > By the way, it's not just you, either. I have emails from others on > these lists in my spam folder. > > The distinguishing factor seems to be whether the email was sent from > the lists.bufferbloat.net ipv6 address. Unless this address > corresponds to some kind of tunnel broker possibly also used by > spammers, I can only assume this is some kind of bug (after all, it > was spf validated so the address shouldn't matter at that point?).
Indeed, gmail requires extra measures for IPv6: https://support.google.com/mail/answer/81126 (scroll down to "Additional guidelines for IPv6"). Fixing DKIM might be worthwhile :) -Toke _______________________________________________ Cake mailing list [email protected] https://lists.bufferbloat.net/listinfo/cake
