[154806] in North American Network Operators' Group
Re: Our first inbound email via IPv6 (was spam!)
daemon@ATHENA.MIT.EDU (Jack Bates)
Fri Jul 13 12:47:18 2012
Date: Fri, 13 Jul 2012 11:46:04 -0500
From: Jack Bates <jbates@brightok.net>
To: Raymond Dijkxhoorn <raymond@prolocation.net>
In-Reply-To: <alpine.LFD.2.00.1206051626590.13070@noc.prolocation.net>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On 6/5/2012 9:29 AM, Raymond Dijkxhoorn wrote:
>
> Looking more closely... Is this still work in progress?
>
> ;; ANSWER SECTION:
> comcast.net. 358 IN MX 5 mx3.comcast.net.
> comcast.net. 358 IN MX 10 mx1.comcast.net.
> comcast.net. 358 IN MX 5 mx2.comcast.net.
>
> ;; ADDITIONAL SECTION:
> mx2.comcast.net. 6958 IN A 76.96.30.116
> mx3.comcast.net. 358 IN A 68.87.26.147
> mx1.comcast.net. 358 IN AAAA 2001:558:fe14:70::22
>
> You are now only accepting IPv6 if all IPv4 fails?
> Or will AAAA records for mx2 and mx3 added later?
>
Actually, I've had a problem with my version of sendmail on solaris
choosing mx1.comcast.net and then reporting host not found. I think this
is an issue with address selection, despite the server not being setup
for v6 (os/sendmail are set for v6 support, but no assignment). I can't
think of another reason why it would bounce 800+ emails with
relay=mx1.comcast.net but have 0 logs for mx2/mx3.
Jack
