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 2dudes.biz
Found
Selector: google
(TXT on google._domainkey.2dudes.biz)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1ez9WcE93V15b776iub1nvTKP1mlzYEeCtqLBbU6liL3GPnIpd9pplbHIFzkDhqheZPxXuY8BDVL5Fo9w5svuRHr2cRqWym5DZ57Xiz3o80P3UwcaD8ddIwMa7Zoxm3AsDUnTcqW09zvL0UJA/W65jbIqXKTb1JcbXqiC9tq4UA8eq6Cwm1ZORc3l/7P+0r/K8xzsMOqC6/6vSNixEj+AujUL22Jx08qfPe4MWUA+ZdUPUMHf26Aba6cwdBQel36+xqCIAJCqMH8sTpCSuIy3p7J4llCuB3ndhbFU/5OalnKQ8BO3Tsi+2dKRTcjJgPDu9vsOSqxloC1UKAFt9hvBwIDAQAB
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.