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by pracer
1626 days ago
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As mentioned above, I think it is due to the fact that SPF may be too broad, as in softfail SPF (defined here https://datatracker.ietf.org/doc/html/rfc7208#section-2.6.5). Based on the RFC, for the rest of possible SPF configurations (more strict), SPF record would be enough. But I am guessing based on the RFC document and my experience. |
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