Re: [spfbis] prefixed names, was Last Call: <draft-ietf-spfbis-4408bis-19.txt>

Mark Andrews <marka@isc.org> Tue, 20 August 2013 15:13 UTC

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To: John Levine <johnl@taugh.com>
From: Mark Andrews <marka@isc.org>
References: <20130820144548.73129.qmail@joyce.lan>
Subject: Re: [spfbis] prefixed names, was Last Call: <draft-ietf-spfbis-4408bis-19.txt>
In-reply-to: Your message of "20 Aug 2013 14:45:48 +0000." <20130820144548.73129.qmail@joyce.lan>
Date: Wed, 21 Aug 2013 01:12:55 +1000
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In message <20130820144548.73129.qmail@joyce.lan>, "John Levine" writes:
> Newsgroups: iecc.lists.ietf.ietf
> From: John Levine <johnl@iecc.com>
> Subject: Re: [spfbis] prefixed names, was Last Call: <draft-ietf-spfbis-4408b
> is-19.txt>
> Summary:
> Expires:
> References: <5212FCEF.80701@dcrocker.net> <55459829-933F-4157-893A-F90552D444
> 1A@frobbit.se> <5213174D.7080504@dcrocker.net> <D2148A40-2673-40C7-8349-0A65D
> 0D01794@frobbit.se>
> Sender:
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> Cleverness: some
> 
> >The two following MIGHT NOT be in the same zone:
> >
> >foo.example. IN X RDATAX
> >_bar.foo.example. IN TXT RDATAY
> 
> Since prefixed names have never been used for anything other than
> providing information about the unprefixed name, what conceivable
> operational reason could there be to put a zone cut at the prefix?

When you have "_users" and you want to move the users out of the
hosts namespace and have whom ever deals with people manage that
part of the namespace.

> This impresses me as one of those problems where the solution is
> "don't do that."

There are good reasons to split off administrative control.  "don't
do that" isn't a answer.

-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka@isc.org