Hi !!
When it comes time to define Unified SPF it should be just another
scope, so we can write spf2.0/helo records, or check the scope macro or both.
i feel it will be very difficult to have spf2 replace spf1, but adding
other parts (helo and headers/body checks) as a separated protocols
could be more easy and feasible.
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Best regards ...
It's a fine line between fishing & standing still
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