Catégorie : English

Published policy, source IPs, raw results versus aligned results: what an aggregate report really contains, and what it does not.

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Confirm the diagnosis from the headers, tell spoofing apart from a compromised account, and what actually stops fraudulent sending.

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The three policies, what they actually do, and the progression that gets you to reject without blocking your own mail on the way.

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Authentication, reputation, list quality, content: the real causes, in the order you should examine them.

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SPF authorises servers, DKIM signs messages, DMARC ties both to the name the recipient sees. What each does, and why all three.

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