DKIM Record Checker
Check if DKIM signing is configured for your domain. We detect your email provider from MX records and check the appropriate DKIM selectors.
What is DKIM?
DKIM (DomainKeys Identified Mail) adds a cryptographic signature to outgoing emails. The receiving server looks up your DKIM public key via DNS and verifies the signature, confirming the email hasn't been tampered with in transit.
DKIM records are stored at selector._domainkey.yourdomain.com. Each email provider uses different selectors — Google uses "google", Microsoft uses "selector1" and "selector2", and so on.