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 tanakatosou777.com
Found
Selector: default
(TXT on default._domainkey.tanakatosou777.com)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyoxbWcpnA+9Et4GPPALVm1MxHqi/1Rc932WbJKdYm1l/D02/uJaxHYTDcbDBwzqCwtSX6/p6MIo3GWIhGecxjEYlmk33PJDendctXMETXu3NcFJn3pGfX1aHxW2KQ1FSGQhAm5l5GKPwYTQiZUJFGthL6skT36ad7qR4TOGAqNHNJPSEFvv0iMWeoCxCRBv7p++V/oTGXE3JdWR5t4wjIr+cBJWcmLewuO0hMpXqx4xEuKArJvAwoRnOar2TUYY80ClBU3P6UdwjRlQawD6QWTDb7AoywyRt+awiVOJHkgua3Qj1WeOMiAu3ba0ST8YZS1ZAGXGZFJLc0l22fksQmwIDAQAB
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.