current usage of AAAA implicit MX?
spz at serpens.de
Tue Apr 15 12:59:25 CEST 2008
> 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.
spz at serpens.de (S.P.Zeidler)
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