What Is DMARC Alignment? SPF, DKIM, and Strict Modes

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1. 1. Reading DMARC Aggregate and Forensic Reports for Alignment Data “Each report summarizes every message that claimed to come from a domain over a 24-hour window: how many passed, how many failed, and precisely why.” Despite their diagnostic value, DMARCguard found in a 2026 scan of 5.5 million domains that only 53.5% of DMARC-enabled domains configure a rua= tag, leaving nearly half of adopters blind to their own authentication failures.

   In DMARC reporting

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