On Wed, Apr 9, 2014 at 6:11 PM, <bmann...@vacation.karoshi.com> wrote:and just how is an algorithm supposed to detect that <jeff-k...@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, jo...@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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