Re: IPv6 email reflector

[Jeroen Massar <jeroen@unfix.org>]

On 2010-07-14 04:09, 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 :-).

Congratulations, you have just set up an automatic spammer for the
millions of spammers out there, they spam you, and you spam back the
spoofed email address.

You do realize that this email list is nicely indexed all around the
world I hope and that spammers can easily also read the above email address?

People who configure mail servers can check the log files of their mail
servers.

Others can when sending mail to another person, just ask that person to
cut&paste the headers back and hey, presto you know which parts went
over IPv6 or not.

Greets,
 Jeroen