On Mon, Oct 4, 2021 at 5:27 PM Alexey Shpakovsky via mailop <mailop@mailop.org> wrote: > > On Mon, October 4, 2021 23:17, Michael Peddemors via mailop wrote: > > > > Turn off IPv6 ;) > > May I hop on the bandwagon and ask everyone on this list what was your > experience with spam WRT IPv6?
My admittedly US-centric and Gmail-centric experience with IPv6 is that an IPv6 IP starts out with a much lower reputation as far as Gmail is concerned and it takes a lot of work and prep to deal with that. And Gmail blocks mail from IPv6 hosts lacking rDNS, and not everybody implements rDNS in IPv6. I always turn off IPv6 on my VPSs and cloud services, since I'm always email-focused in one way or another. A few times a year, somebody will come here to Mailop or elsewhere complaining that they can't get mail delivered from their hobbyist site to Google over IPv6. Literally the quickest fix for most of them would be to simply send mail over IPv4 only. https://www.spamresource.com/2020/11/honestly-dont-send-to-gmail-over-ipv6.html > From my small server, I see over 99% of abuse coming from IPv4 servers. You're not wrong... but it's also a case of you're seeing most mail at any scale come from IPv4 servers, spam or not. There are a billion tons of email infrastructure out in the world all doing the work over IPv4 and that actually doesn't seem to be going away anytime soon. If there is any sort of consensus about it, it might be that while the end user infrastructure moves on to IPv6, that leaves enough IPv4 space available to probably host every email service forever. Cheers, Al Iverson -- Al Iverson // Wombatmail // Chicago Deliverability: https://spamresource.com DNS Tools: https://xnnd.com _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
