Handling of -all
2005-02-09 14:34:50
I think we're all aware that SPF does not work well with message
forwarding (college alumni addresses and the like). Given that's the
case, how should -all be handled? Two possibilities I can think of:
(1) Originating domains that potentially send through forwarders should
not publish a -all policy, since some recipients might inappropriately
reject forwarded messages. Since it's hard to know what addresses are
forwarded, -all policies would probably be quite rare.
(2) SPF verifiers should not reject mail that does not match a -all
policy, because of the possibility it came through a forwarder.
In other words, should the domain publish a gentler policy to allow for
forwarders or should recipients apply a gentler response?
-Jim
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