Re: blowback, was A new SMTP "3821" [Re: FTC stuff...........]

On Wed, Dec 08, 2004 at 06:47:51PM -0000, John Levine wrote:

> If the policy is only "-all", i.e., this domain sends no mail at all,
> then the policy is credible.  If the policy is anything else followed
> by -all, it's not.  One of SPF's many problems is that it posits a
> model of the e-mail world that is a lot simpler than the real world.
> 
> In the real world, there are whole lot of remailers and forwarders,
> and no matter how desperately some domains might want to argue that
> nobody's allowed to forward, etc., [snip]

This is bogus.  Forwarding does not have to stop.

SPF by itself does not make a distinction between forgeries as a result
of "old-style forwarding" and spam, virus, etc.

People claming that the SPF community wants to ban forwarding are
spreading fud, no matter their reputation.

Alex