current usage of AAAA implicit MX?

[S.P.Zeidler]

Hi,

> So I'm looking for information from people who are currently working 
> in the IPv6-based email world.
> 
> I'm assuming that a number of email sites over in Asia are already 
> IPv6-enabled, and there are probably other enclaves as well. So I'm 
> looking for information on actual email deployment and sites.

I'm offering cw.net, netbsd.org amd isc.org for domains I happen to know
to be at least partially v6 enabled. Usage common to all three is that
(some) mail servers are dual-stacked and have both A and AAAA to their name
(ie there is no separate v6 name that would appear in MX records).

>   *	How widespread is the use of implicit MX with AAAA records? That
> 	is, how prevalent are email sites that do not have MX records
> 	but do have AAAA records?

I'm not aware of any.

>   *	How big is the existing IPv6-enabled email world?

Probably larger than you expect, with a lot of dual-stacked MX being
around. Enough so that I have seen people abuse "free" tunnels to send
spam, but not enough so that I bother to greylist on v6.

regards,
	spz
-- 
spz at serpens.de (S.P.Zeidler)