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Re: a "never relays" parameter

2004-06-09 13:18:12
<spf(_at_)kitterman(_dot_)com> writes:

OK.  Now I'm confused (no great feat).  Then explain again how this
would act differently than -all?

"-all" still allows others to relay your mail (on your behalf).  "-all"
makes no distinction in policy between direct-only mail and mail that
may or may not be relayed.

The primary corner case seems to be forwarding services, but that is
easily handled.  While it is not practical (or smart) for
billing.aol.com to extend trust to every forwarding service out there,
it is practical for individual *receivers* to extend their trust out to
any forwarding service they use (and trust them to do SPF checks for
them).

Daniel

-- 
Daniel Quinlan
http://www.pathname.com/~quinlan/


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