[ih] more bounce management, was update about bogus list unsubcribe requests

[Lyndon Nerenberg]

> On Aug 26, 2016, at 7:31 PM, Miles Fidelman <mfidelman at meetinghouse.net> wrote:
> 
> But, I would assume that if I send 100 copies of a
> message, to individual addresses at AOL, AOL will run antispam/virus on
> each copy - as opposed to receiving one copy with 100 addressees in the
> To: line.

One optimization is to save a crypto-hash of the message body along with the spam/virus score. If you get 2nd or subsequent copies of the same message body, you can skip the heavy-weight processing of the message contents.

--lyndon

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