Re: [DNSOP] I-D Action: draft-ietf-dnsop-isp-ip6rdns-03.txt

"Woodworth, John R" <John.Woodworth@CenturyLink.com> Mon, 05 June 2017 20:59 UTC

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From: "Woodworth, John R" <John.Woodworth@CenturyLink.com>
To: "'John R Levine'" <johnl@taugh.com>, Paul Vixie <paul@redbarn.org>
CC: "dnsop@ietf.org" <dnsop@ietf.org>, "Woodworth, John R" <John.Woodworth@CenturyLink.com>
Thread-Topic: [DNSOP] I-D Action: draft-ietf-dnsop-isp-ip6rdns-03.txt
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Date: Mon, 5 Jun 2017 20:58:59 +0000
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References: <20170511165852.34338.qmail@ary.lan> <59149F29.6090908@redbarn.org> <alpine.OSX.2.21.1705111329370.38256@ary.qy> <5914A0B7.805@redbarn.org> <alpine.OSX.2.21.1705111336050.38256@ary.qy>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/dnsop/6QH_8vLCR0aj8AboQFwr23fpry8>
Subject: Re: [DNSOP] I-D Action: draft-ietf-dnsop-isp-ip6rdns-03.txt
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> -----Original Message-----
> From: DNSOP [mailto:dnsop-bounces@ietf.org] On Behalf Of John R Levine
> Sent: Thursday, May 11, 2017 1:41 PM
> To: Paul Vixie
> Cc: dnsop@ietf.org
> Subject: Re: [DNSOP] I-D Action: draft-ietf-dnsop-isp-ip6rdns-03.txt
>
> >> You might want to talk to large providers that do v6 now.
> >> With only one exception I can think of, they have no plans
> >> to do synthesized v6 rDNS, and they routinely block port 25
> >> from all their consumer networks.
> >
> > i'd like to meet your friends. but i'd also like them write an
> > rfc about it.
>
> You've met a lot of them at M3AAWG.  Also see draft-ietf-dnsop-isp-ip6rdns
>
> I hope we are not so foolish as to repeat the NAT fiasco and stick our
> fingers in our ears becuse the rest of the world doesn't work in a way
> some of us might prefer.
>
> The reality is that if you want people to accept your v6 mail, your mail
> hosts need rDNS, and not rDNS that looks like it was autogenerated by
> kludges like BULK.
>

Looks like the radioactive spider that bit me was from the control group
because there was no tingling of my spidey sense :)

I echo the point of email servers being assigned a real rDNS to cut down
on heartburn.  Thankfully one of BULK's features ensures real RRs can
easily coexist within a synthesized range.

BTW: kludge seems harsh for a carefully thought-out solution


/John

>
> Regards,
> John Levine, johnl@taugh.com, Taughannock Networks, Trumansburg NY
> Please consider the environment before reading this e-mail. https://jl.ly
>
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>
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