I guess Jeroen's point is that you would do well to apply some form
of policy to it, such as not responding to blacklisted addresses.
Although at this point I would guess that there are not a lot of IPv6
Bots (that will come, but is not status quo today); having this
available would probably encourage their development :-)
On Jul 13, 2010, at 10:09 PM, Bob Van Zant wrote:
I setup a reflector a few weeks ago that helps email users
identify whether or not they're sending over IPv6 and also clues
them in to what their DNS looks like from the outside world.
To use it simply send an empty email to ipv6@test-ipv6.veznat.com
It'll reply to the email showing you the Received headers as well
as dig -t mx output for your domain.
Nothing too terribly fancy. Feel free to provide feedback or
enhancement requests. Use it but please don't abuse it :-).
-Bob
http://www.ipinc.net/IPv4.GIF