In DMARC, the "adkim" tag stands for "Alignment Mode for DKIM." It specifies how DKIM (DomainKeys Identified Mail) signatures should be aligned with the email's From domain when evaluating DMARC policy.
Setting the adkim tag: In your DMARC record, you specify the "adkim" tag followed by one of two possible values:
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By setting the "adkim" tag in your DMARC record, you can specify how DKIM signature alignment should be evaluated when enforcing DMARC policy, helping enhance email security and protect against email spoofing and phishing attacks.