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 2fast4u.biz
Found
Selector: google
(TXT on google._domainkey.2fast4u.biz)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEArBhVlelDqGlxMgZd0M7l67yvUBuCGfn+Ptp5ydCGZWrRagLUmS33gpaqNXx4RoKtsxmYRLrVW39KakybEuEQ8y8MHJC4EmVYtzXHxORoyt5DKZp+Gyi7+mgtOfZ+iV5wYeTi2pBhqVIYKqcrHVtJFLywvk8wo2u+kptitATgwfR1SkoLcXiUB27KXda5FfR1hikdzYdWsmwHyRmug7SD1mU2k+94PZRW60eXsbx4Q4bhXY86m84gJdFowqU7qejsE6Wx18qz7ZL44qIHoHVt7qWBi1MKYVHOAO6nm30NlpPdMpebAMB6UzM9ItallwezGI1ALv39d2P9T+NMqIxIMQIDAQAB
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.