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Re: Last Call: draft-klensin-rfc2821bis

Tony Finch <dot@dotat.at> Mon, 31 March 2008 11:58 UTC

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Date: Mon, 31 Mar 2008 12:58:21 +0100
From: Tony Finch <dot@dotat.at>
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To: John Levine <johnl@iecc.com>
Subject: Re: Last Call: draft-klensin-rfc2821bis
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On Sat, 29 Mar 2008, John Levine wrote:
>
> Getting rid of the AAAA fallback flips the default to be in line with
> reality -- most hosts don't want to receive mail directly, so if
> you're one of the minority that actually does, you affirmatively
> publish an MX to say so.

I agree that this is the right thing to do in an ideal world.

However there's a lot of old running code out there that implements the
AAAA fallback. Is IPv6 still enough of a toy that the stability of its
specifications doesn't matter?

Tony (in two minds).
-- 
f.anthony.n.finch  <dot@dotat.at>  http://dotat.at/
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