On Sun, 5 Jul 2009, Michael Deutschmann wrote:
On Sun, 5 Jul 2009, Alessandro Vesely wrote:
Michael Deutschmann wrote:
With [fm=] options, senders would then be free to use "-all" in all
cases where it is appropriate by the original intention of the standard.
The original intention of the standard is to compute whether a
server is authorized to use the domain name in the sender's address.
during SMTP transactions. Since forwarding is part of that, it is
included in that intention. IOW: I think it's very difficult to
Receiver forwarding is *not* part of the sender policy and can never be
because it is set up by the receiver, not the sender. It is part
of the receiver policy. It is trivial to handle if the receiver
can remember what forwarders they have contracted. If they can't
(the usual case), then they simply can't reject on SPF FAIL. But
this is not something the sender can or should worry about when
setting a *sender* policy.
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