Re: Last Call: draft-klensin-rfc2821bis

were you folks pursuing this on ietf-smtp, as requested, you might have noticed 
that the problems with changing the model have been explored thoroughly.

d/

Henning Schulzrinne wrote:
> I don't think this is a major issue, for two reasons: By the time that  
> IPv6 mail becomes common, mail clients (and MTAs) will have been  
> updated numerous times to deal with the security issue de jour.  
> Secondly, even if a mail client or MTA were to erroneously implement  
> this behavior, this causes no particular harm to the world at large,  
> except bad error behavior for that particular MTA or MUA.
> 
> Henning
> 
> On Mar 31, 2008, at 7:58 AM, Tony Finch wrote:
> 
>> 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/
>> ROCKALL MALIN: SOUTHERLY VEERING WESTERLY, 4 IN MALIN AT FIRST,  
>> OTHERWISE 7 TO
>> SEVERE GALE 9. ROUGH BECOMING VERY ROUGH OR HIGH. RAIN OR SHOWERS.  
>> MODERATE OR
>> GOOD, OCCASIONALLY POOR.
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-- 

   Dave Crocker
   Brandenburg InternetWorking
   bbiw.net
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