Re: autoresponding to Yahoo DMARC breakage

["John R. Levine" <johnl () iecc com>]

> On Wed, Apr 9, 2014 at 6:11 PM,  <bmanning () vacation karoshi com> wrote:
> >         and just how is an algorithm supposed to detect that
> >         <jeff-kell () utc edu> is a single human and not a list?
>
> If the autoresponder is sane, it looks for:
>
> List-Id: North American Network Operators Group <nanog.nanog.org>

Yes, there are a lot of headers that give you a hint that a message is 
from a list.  But the heuristic to look for the recipient's address on the 
To: line works so well, along with a little rate limiting, that you don't 
really need anything else.

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

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