No DKIM email-authentication record found

DKIM (DomainKeys Identified Mail) is a cryptographic signature added to outgoing email that proves it genuinely came from your domain and wasn't altered in transit. This check looks for a DKIM record at the common provider selectors for a domain that sends email, meaning it has mail exchanger or SPF records. On this site's domain, mail-sending activity was detected, but no DKIM record was found at any common selector. Because custom selectors can't be enumerated, this is a strong signal rather than absolute proof DKIM is missing. DKIM is the third pillar of email authentication alongside SPF (Sender Policy Framework) and DMARC (Domain-based Message Authentication, Reporting and Conformance). Without it, mailbox providers are more likely to route the domain's legitimate email into spam folders, and DMARC can't fully protect the domain against spoofing without a working DKIM signature to check against. Whoever manages the domain's email platform should enable DKIM, which is usually a one-click 'authenticate domain' step inside the email sending platform's settings, Google Workspace, Microsoft 365, and most marketing email tools all support this directly. This materially improves how reliably the domain's email actually reaches inboxes instead of spam.