On 22-aug-2007, at 19:57, Keith Moore wrote:
I have no problem breaking bounce/redirect. Yes, it has its uses, but
so do open relays, which we don't have anymore. The current levels of
mail abuse means that it's necessary to throw away a little baby with
the bathwater to keep the toxic waste out of the bath.
sorry, this is a nonstarter. being able to set a forwarding
address is
extremely important, and breaking Sender is indefensible. (Sender is
useless unless it preserves the original identity of who or what sent
the message.)
Obviously life is a bit more complex than "add PKI and signature to
From: and stir". If I get a letter addressed to me from the tax
people, I'll take it, regardless of how it happened to arrive. Junk
mail on the other hand (the paper variety) will meet the inside of my
paper bin without delay if I receive it through the mail, but if my
boss gives it to me and asks me to look at it, I look at it.
With many of the current protocols, SMTP being a prime example, there
are very many ways to do things that weren't foreseen, or at least
not specifically accommodated, in the original protocol. That was
great because it allowed innovation. Unfortunately, the most
innovative people around these days are the spammers and fishers, so
these days, when we come up with new protocols, we need to
specifically allow everything that's good so implementations/users
can reject everything else. I.e., a new mail protocol will have to
address things like forwarding and mailinglists explicitly.
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