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Re: [ietf-smtp] Draft for compressing SMTP streams

2016-08-18 12:42:52
Took out smime, since this discussion has nothing to do with it.

Modern Word and Excel files are in ZIP container formats. Therefore, they are already compressed. [Looks like Paul Smith already posted about this.]

Oh, right, forgot about that.

It's looking to me like there are two places where CDAT might be useful. One is to squeeze base64 encoded stuff back to about its original size. The other, since the compressor is deliberately not reset between messages, is when you send approximately but not quite the same message to several people in the same session, e.g., different text with the same attachments. Imagine you're an ESP sending tarted up mail with lots of images, and each recipient's name is spliced into the text of his message.

John Levine, johnl(_at_)taugh(_dot_)com, Taughannock Networks, Trumansburg NY
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