Re: Email over v6

[Mikael Abrahamsson <swmike () swm pp se>]

On Thu, 8 Jul 2010, Tim Chown wrote:

>         Received:       from s0.nanog.org (s0.nanog.org =
> [2001:48a8:6880:95::20]) by crow.ecs.soton.ac.uk (crow.ecs.soton.ac.uk =
> [2001:630:d0:f110::25b]) envelope-from =
> <nanog-bounces+tjc=3Decs.soton.ac.uk () nanog org> with ESMTP id =
> m673381995435214jA ret-id none; Thu, 08 Jul 2010 03:03:19 +0100
>         Received:       from localhost ([::1] helo=3Ds0.nanog.org) by =
> s0.nanog.org with esmtp (Exim 4.68 (FreeBSD)) (envelope-from =
> <nanog-bounces () nanog org>) id 1OWgRQ-000HxK-8m; Thu, 08 Jul 2010 =
> 02:02:20 +0000
>         Received:       from outgoing03.lava.net =
> ([2001:1888:0:1:202:b3ff:fe1d:6b98]) by s0.nanog.org with esmtp (Exim =
> 4.68 (FreeBSD)) (envelope-from <tony () lava net>) id 1OWgPi-000G1S-Si for =
> nanog () nanog org; Thu, 08 Jul 2010 02:00:35 +0000

One other thing I also notice is that there is a high correlation between 
use of TLS and IPv6, I guess a lot of people with IPv6 clue also enable 
TLS:

Received: from s0.nanog.org (s0.nanog.org [IPv6:2001:48a8:6880:95::20])
    (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
    (No client certificate requested)
    by uplift.swm.pp.se (Postfix) with ESMTPS id F1B959F
    for <swmike () swm pp se>; Thu,  8 Jul 2010 09:10:41 +0200 (CEST)

--
Mikael Abrahamsson    email: swmike () swm pp se