ISP phishing

Wed Jun 29 09:58:16 UTC 2005

On Wed, 29 Jun 2005, Brad Knowles wrote:
>
> 	SPF is not a panacea.
>
> 	In fact, it is pretty much totally worthless, unless you are the sole
> owner of a given domain and you can guarantee that all mail you ever send will
> always be routed through the machines that you own and control, and you know
> that you don't ever forward e-mail for any of your other accounts.

Actually, what you have to guarantee is that you never send email to
anyone who forwards their email elsewhere. This is impossible.

Tony.
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