nanog mailing list archives

Re: ISP phishing


From: abuse () cabal org uk (Peter Corlett)
Date: Wed, 29 Jun 2005 12:18:00 +0000 (UTC)


Tony Finch <dot () dotat at> wrote:
[...]
Actually, what you have to guarantee is that you never send email to
anyone who forwards their email elsewhere. This is impossible.

How do you figure that?

The failure mode in this case is if somebody arranges "dumb" mail
forwarding that doesn't do envelope rewriting, and also applies a SPF
filter on their incoming mail. The problem is quite clearly of the
recipient's making rather than any fault of the sender's.

-- 
When I told the people of Northern Ireland that I was an atheist, a woman in
the audience stood up and said, 'Yes, but is it the God of the Catholics or the
God of the Protestants in whom you don't believe?
                                                                - Quentin Crisp


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