DKIM Record Checker
DKIM signs outgoing emails. Receivers verify the signature using a public key in DNS.
DKIM lives on <selector>._domainkey.<domain>. If selector is empty, we try common ones.
Result for cookpad.com
Found
Selector: default
(TXT on default._domainkey.cookpad.com)
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDhSwRTJrNzIJ9Re6iIyuU/Zsz3t4v3Qo6p6cC1kmCyQxOLFrbHdz6xYZJhftu4qvijdHBOy9K1IxqAvSR1Ek6FSzUYiEqpRVgf0+Hy0nM2hGYZW/HhtD0Eo2xKM5qJBCG+K4gnshpxqma0dRhOlaEWE6QtElkw+F60djsvN/HxOwIDAQAB
Selector: google
(TXT on google._domainkey.cookpad.com)
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC+0hyfRPn8WDqrFG+mb7rNPwHn1P8Ab1pBY9hg1upg8nK4pSPm+7uAIC8HpIorHpZPBypWe+6AbZmOgm84dap6v6oz9LTRKiM5wb2cVmgGQ8n+uiKnmRrZfk9CelV627o1AKXTHQv5ct0KCdxZGnK+GF2NjQ/ZIVu0eIm52j5ndwIDAQAB
FAQ
Why does DKIM require a selector?
Selectors allow rotating keys and running multiple keys per domain.
Where is DKIM published?
TXT on <selector>._domainkey.<domain>.
DKIM record exists but emails still fail DKIM?
Signing may be disabled or the selector used in email differs from DNS.
Do I need DKIM if I have SPF?
Yes, many providers use both for best deliverability and DMARC alignment.
Can I have multiple DKIM selectors?
Yes, that is common for key rotation or multiple senders.
What is DKIM?
DKIM (DomainKeys Identified Mail) adds a cryptographic signature to outgoing emails. DNS stores a public key that allows receivers to verify authenticity.
Example
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0B...
Common mistakes
- Wrong selector (the record exists but under a different selector).
- Key is split incorrectly across multiple TXT chunks (some DNS UIs break it).
- Publishing DKIM but not enabling signing on the mail provider.