Re: Last Call: draft-klensin-rfc2821bis

Keith Moore <moore@network-heretics.com> Wed, 26 March 2008 19:31 UTC

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Date: Wed, 26 Mar 2008 15:28:23 -0400
From: Keith Moore <moore@network-heretics.com>
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Subject: Re: Last Call: draft-klensin-rfc2821bis
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> This document is not the place to fight spam. If you want a BCP to deprecate
> the fall-back, then write one. Until all the implementations remove
> fall-back to A, the correct behavior is to also fall-back to AAAA. People
> (particularly the apps dev & support communities) are having a hard enough
> time getting their heads around even thinking about IPv6 that making your
> proposed procedural change is insane. Whatever reasons people have for not
> implementing MX will not change just because they are deploying IPv6. 
> 
> The current text is just fine the way it is.

I disagree.  There are several good reasons for senders not falling back 
to AAAA lookup.  I just don't happen to think that spam filtering is one 
of them.

Keith
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