AAAA, IPv6 for SPF about mailinabox HOT 4 CLOSED

Closing-

AAAA records were added by #70.

For SPF, since we're using mx in the SPF record I think we should be good for IPv6.

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IMO not resolved as mailinabox suggests a SPF record which only checks the MX records (and in my situation setting the AAAA record for dom.ain to my ipv6 was not usable (also, but I'm not sure on that, that would require to set the spf record to something like mx a -all)).

Cleaner would be to just set the MX record to eg. mx.dom.ain (as it's done)

Set the A record for mx.dom.ain. to the ipv4 (as it's done already)

Set the AAAA record for mx.dom.ain to the ipv6

Set smtp_bind_address6 to the same ipv6 in /etc/postfix/main.cf

PS: Almost forgot why I needed this: my server has a /64 block of ipv6's assigned and otherwise takes a random one when connecting to gmail...

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Interesting....

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(Also to be extra safe, maybe setting smtp_bind_address is also useful, as some people may have multiple IPv4's)

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