I theorize is that if the public knew that a significant number of
what Hotmail calls "forged" addresses were not in any honest sense
forged,
I think it is legitimate in a very honest sense to consider email
forged if the manner in which it is sent is not approved by the
owner of the DNS zone.
Yeah yeah, I know some folk like the fact they can send their email
from anywhere they choose without relaying, and if you happen to own
the zone that is fine too - especially if you put a notice in your
zone to say that is what you do.
However mail claiming to come from hotmail that does not come through
their servers can be honestly and legitimately considered forged, or
to coin a phrase 'Notmail'.
I think this is a better idea than deciding that we are going to
rule all freemail to be illegitimate because we don't use it and
so think that the 50 million odd who do are less important than
the right to send email any way we chose.
Lots of our consultants use hotmail because they can't access the
corporate mail systems while on customer's premises (I know, Rim
pagers...)
This would be further improved if the email clients would tell the
user trying to enter a fake email address 'hey dude, you know that
some spam filters might consider your configuration invalid'.
Phill
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