On Aug 22, Lorenzo Colitti <[email protected]> wrote: > I believe the answer has to do with the fact that a lot of IPv6 email is > spam [citation needed]
> and the fact that if you can't/won't do what's suggested in the > "additional guidelines for IPv6" then you can always continue to use IPv4. If you have enough IPv4 addresses for all servers... > >From what I've heard it's somewhat of a consensus position among large > email operators on what to do for IPv6 SMTP inbound. There is somewhat of a desire among some large email operators to push the rest of the Internet to domain-based reputation, but I am not aware of anybody else penalizing IPv6 senders this way. > Note that from the text it sounds like SPF / DKIM is not strictly required, It is not "strictly" required, but as soon as the reputation for the IP will decrease a bit (very much less than what would apply to a v4 IP) then all mail with no domain-based reputation will be delivered to the spam folder for a very long time. -- ciao, Marco
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