Re: IPv6 isn't SMTP

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But, as always, I'm not holding my breath.

Is spam fighting really about SMTP? Or is it about abuse of the transport layer by (among other things) the SMTP?

I don't think that your typical spam recipient cares how the spam got into her inbox. Anyone who has any familiarity with large scale mail systems knows that the only way to have any hope of effective spam filtering, in any medium, is to combine all the clues you can get. For mail, the source of the message is a highly useful clue. R's, John