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In my travels there's a significant portion of the internet which is not IPv6 capable; for example the World Community Grid failed for me when trying to use pur
by stonesweep 6y ago
In my travels there's a significant portion of the internet which is not IPv6 capable; for example the World Community Grid failed for me when trying to use pure IPv6, and they send emails about things. I'd currently not risk using an IPv6 record for my MX, I suspect a high failure rate delivering email from every service on the planet will follow.
- deleted 6y ago[deleted]
- s800 6y ago> set qu=mx > gmail.com. Server: 10.1.1.1 Address: 10.1.1.1#53 Non-authoritative answer: gmail.com mail exchanger = 20 alt2.gmail-smtp-in.l.google.com. gmail.com mail exchanger = 5 gmail-smtp-in.l.google.com. gmail.com mail exchanger = 40 alt4.gmail-smtp-in.l.google.com. gmail.com mail exchanger = 10 alt1.gmail-smtp-in.l.google.com. gmail.com mail exchanger = 30 alt3.gmail-smtp-in.l.google.com. Authoritative answers can be found from: > set qu=aaaa > gmail-smtp-in.l.google.com. Server: 10.1.1.1 Address: 10.1.1.1#53 Non-authoritative answer: gmail-smtp-in.l.google.com has AAAA address 2607:f8b0:4001:c05::1a
- mlyle 6y agoSure, but it has A records too.
- stonesweep 6y agoI wake up and see the HackerNews downvote train has hit myself and you, when what you said is 100% correct; gmail-smtp-in.l.google.com is both IPv4 and IPv6. The network I'm on right now (VPN to work) cannot service IPv6 and I cannot connect to the IPv6 IP for that MX host, but I can easily connect to the IPv4 endpoint.