On Thu, 2004-02-26 at 20:22 -0500, Theo Schlossnagle wrote:
But if you don't want to respect my record because you
don't agree with my right to prohibit you as a remailer to use that
domain directly in your envelopes, then you are fraudulent. That is,
after all, the entire purpose of SPF.
By sending mail to my system using the Simple Mail Transfer Protocol,
defined in RFC821 in 1982 and refined in RFC2821 in 2001, you are
implicitly granting me the right to behave in the way which SMTP servers
have been behaving for over two decades.
To expect otherwise is extremely naïve.
It is not a flawed assumption. SPF and the records I (and everyone
else) publish are valid regardless of their impact on remailers.
If you have the right to speak for all users of your domain, and you
don't wish any user at your domain to be able to send email to users at
virtual domains or users who have forwarding setups, that makes sense.
However, communication requires two parties and I believe that _my_
users may not accept my argument that I should respect your apparent
wishes without having given _them_ the choice.
--
dwmw2