I had a problem with my personal server for a little while; all my SPF, DKIM, et... | Hacker News

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sliverstorm on July 17, 2015 | parent | context | favorite | on: Dear Google Mail Team

I had a problem with my personal server for a little while; all my SPF, DKIM, etc was all set up for IPv4. I have a couple IPv6 interfaces on my machine, and my mailserver was delivering to GMail over IPv6!!

ork on July 18, 2015 [–]

Yeah, most of the time reverse DNS on the IPv6 address is not configured, leading to rejection.

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