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One API Call Audits a Domain's SPF, DKIM and DMARC Email DNS Records

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A DEV Community article explains that spam-folder problems often stem from DNS issues such as missing DMARC records, overly complex SPF records, or absent DKIM keys. It describes an email DNS health endpoint that returns MX, SPF, DMARC and DKIM data, an overall grade, and severity-ranked issues without sending any mail. The author uses google.com as an example, showing a good grade, a reject DMARC policy and a low-severity note about DKIM selectors. The piece also notes the endpoint's limits: DKIM is checked only against a fixed list of common selectors, and results reflect published DNS rather than actual delivery outcomes. Code examples in curl and JavaScript are provided for running the audit.

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One API Call Audits a Domain's SPF, DKIM and DMARC Email DNS Records · ShortSingh