Re: [ietf-smtp] [Shutup] Proposed Charter for something

On Thu, Dec 10, 2015 at 03:15:41PM -0000, John Levine wrote:
> > The real question is: would spam filters still be
> > able to do a good enough job if we removed these things?
> No, it's not.  The question is whether there would be an overall
> gain in users' privacy since providers would likely be less able
> to combat phishing and other privacy attacks.
>
> Spam filtering is just part of it, and in this case not where the
> most important effects would be.
I meant "spam filters" in the broad sense, including all human and
non-human activity against spam, though should have made that clear.

Are there other parts of the email headers that are important to
combat phishing and other "privacy attacks", apart from the submission
IP address? And how much does the actual IP address matter, as opposed
to a "cryptographic blob" of said address, that can be "decrypted" by
the ISP and is constant for some time for a given (user,IP) combination.

Martijn.

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