I do it already. Well, both IPv4 and IPv6. There's a decent number of IPv6 capable MX's out there, the most prominent being GMail. If you were meaning IPv6-onl

I do it already. Well, both IPv4 and IPv6. There's a decent number of IPv6 capable MX's out there, the most prominent being GMail. If you were meaning IPv6-only then yes that would be pretty bad.