Hi Stephen,
At 01:07 05-05-2014, Stephen J. Turnbull wrote:
Nor do I.  I point to the *possibility* and our lack of ability to
predict effects.  The RFCs have proven over time to give us a system
that works smoothly.  We have rules of thumb that help to understand
why they work as well as they do, but the most important one is that
RFCs must be shown to work in practice before they become Proposed
Standards.  Ie, don't expect something to work until you see it.

This is a nit. There isn't any requirement that RFCs have to be shown to work in practice before they become Proposed Standards.

of the DMARC folks or the sysadmins at Yahoo.  What matters is what
"just plain folks" think.  Remember, according to AOL, 2% of such

Yes.

No, that's the whole point.  They will *not* strip the suffix, and
instead prefix the phishing attack with

    We have repeatedly attempted to reach your email address, but our
    mail has been rejected due to your ISP's DMARC configuration.
    Thus we have used the .invalid convention to work around this
    problem for this important message.

Yes.

Regards,
-sm

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