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From Benny Pedersen ...@junc.eu>
Subject Re: Legit Yahoo mail servers list
Date Thu, 26 Jan 2017 18:40:41 GMT
Michael Orlitzky skrev den 2017-01-26 19:24:

> The OP is looking for a way to whitelist so the "?all" is irrelevant.
> Does the sending IP pass the SPF check? If so, whitelist it.

PTR in spf is very hard to forge

treat it as ip4:0.0.0.0/0 -all

yahoo do not want to reject based on spf, but still provide a badly spf 
to follow ignorants

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