DKIM Checker
Ensure your DKIM signatures are properly configured.
DKIM Checker
Query and validate the DomainKeys Identified Mail (DKIM) records for a domain using a specific selector.
Enter a domain and selector above to instantly validate its DKIM record configuration.
What is a DKIM Record?
DKIM (DomainKeys Identified Mail) provides a method for validating a domain name identity that is associated with a message through cryptographic authentication. It adds a digital signature to emails, allowing the receiver to check that an email was indeed authorized by the owner of that domain and that the email hasn't been modified in transit.
What is a DKIM Selector?
A single domain can have multiple mail services (e.g., Google Workspace, Mailchimp, Sendgrid). The selector is used to point to the specific public key associated with the service that signed the email. To check a DKIM record, you must know both the domain and the selector. It is queried at selector._domainkey.example.com.
Common DKIM Tags
- v: Protocol version (usually `DKIM1`).
- k: Key type (usually `rsa` or `ed25519`).
- p: The public key data used by receiving servers to verify the DKIM signature.
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