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 lottery.ie
Found
Selector: selector1
(TXT on selector1._domainkey.lottery.ie)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyk58XBUezlsw8KNC3AqHIWDkSVYeQWIEllHL+gOdmW2I0d7EPfB5pctsMQtlXhIQJYGCO6jm3Ky3zWvotdqjST7hpJ3+SpvsXElSRRvWNQCeU3hLLWQ/xO2ETThym1InKmP3ht8SZtSoJ4hxg0Wa51GLXZb6eSMBK9MudNDULPGJnc6MH4eUn0M63y/I/Uy3BSo9qCmEry/ymJD5912b2XReyZjmJAm8CZ1fR9S8MHo9+h1zffKG2VBy7AbiNz3yOdWnx8o3Hd4hjsV9b2asswmpgNBu8bHE+QbweE6KJB0E/1IyHyf8VdAplRjbGx/4GyIMkDOxzxnLt4OPT4e7+QIDAQAB;
Selector: selector2
(TXT on selector2._domainkey.lottery.ie)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA5O9DfSmIBCnh4smQyNRwJSTtzU+kLzL/P4xbnITCH/v4PqdaWr7udJ3cSBgSXOt6lFc214hxH0oJnOvpSYFQnTUPCtBeXVUh67o/NpfEL3cVM3bMv9ZMJBG4W7IQGmpBusk7Rx5MKsllHjEy7DDyDjHDHUadv0DJ71TDqupuRjVPG0u4H1Q1lkGrdfQpb/mvtjBxNpDFEyV53OtNDJ3kb8nQ0LZB1FwG7fNVLammTfSGDQqz8c+yWHO2venHBZA5o9KYjRKmDHrC1a0/itoDBqGywTqnvHGXN2JrkvJOCJPNR+Qz/zwxBiEGIMyS4xU2MENpwzyTy402yMzwu26pIQIDAQAB;
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.