DKIM Record Lookup & Validator
Check if your DKIM record is configured correctly and validate email authentication setup
We automatically detect your DKIM selector from 20+ common selectors
About DKIM Records
DKIM (DomainKeys Identified Mail) is an email authentication method that allows the receiver to check that an email was sent and authorized by the owner of that domain. This is done by adding a digital signature to each outgoing email.
How DKIM Works
- Your email server signs outgoing emails with a private key
- You publish the public key in your DNS as a TXT record
- Receiving servers use the public key to verify the signature
- If the signature is valid, the email is authenticated
DKIM Tags Explained
- v (version)
- DKIM version, must be "DKIM1"
- k (key type)
- Type of encryption key (rsa or ed25519, default: rsa)
- p (public key)
- Base64-encoded public key used to verify signatures (required)
- h (hash algorithms)
- Acceptable hash algorithms (sha1 or sha256)
- s (service type)
- Type of service (email or *, default: *)
- t (flags)
- Flags: y=testing mode, s=strict mode
- n (notes)
- Human-readable notes about the key
Finding Your DKIM Selector: DKIM selectors vary by email provider. Check your email service provider's documentation or common selectors include: "default", "google", "k1", "s1", "selector1", "dkim".
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