John C Klensin writes:
And, in addition and FWIW, the claim that a dual stack setup
"practically requires" an MX setup is false, as has been pointed out
before.
If that refers to me, then I think that wasn't what I claimed. I claimed
(or meant to claim) that using an dual-stack _relay_ practically
requires MX records. One way to do it:
example.com IN A 2006:0608:...
example.com IN MX 10 example.com.
IN MX 20 relay.example-isp.net.
There are other ways to do it. People who don't mind pointing
http://example.com at the relay can use an extra A record instead of
the MX record(s).
Arnt
