Re: [apps-discuss] Feedback on draft-moonesamy-smtp-ipv6-00

"John R. Levine" <johnl@iecc.com> Tue, 15 November 2011 11:04 UTC

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From: "John R. Levine" <johnl@iecc.com>
To: "Tony Finch" <dot@dotat.at>
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Subject: Re: [apps-discuss] Feedback on draft-moonesamy-smtp-ipv6-00
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>> In step (9), you say "If a transient failure condition is reported,
>> try the next MX RR" which looks wrong to me.  If you get a 4xx, you
>> requeue the message and try it again later.
>
> This is a point of repeated disagreement and there is no accepted
> consensus. When they get a 4yz, some SMTP implementations will immediately
> re-try delivery on the other hosts, and only queue the message for later
> delivery if none of the hosts will take the message.

Ah, right.  Can you suggest language that means "if you get a 4yz do 
whatever you do now."

Regards,
John Levine, johnl@iecc.com, Primary Perpetrator of "The Internet for Dummies",
Please consider the environment before reading this e-mail. http://jl.ly