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 bingo.com
Found
Selector: selector1
(TXT on selector1._domainkey.bingo.com)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAszWW+ZgQ7MKAUI7/8qMMMH+T2izmwQHtFWM2vNWluSPIu4OWD4Ksvq+IX2L+JxSvI7Cm4IPgXI4lswu2wHR2wGa0AG79YzOqJVBtDeOl/4ij9w48qKqlIjpKvJO07u7I1T3/lE8RkkgYOGloL5z7ZO6BW+K4wSlvvspNjcw+6WRH/Az0hUPeNeGShox+T2GhZjomy9EV6oSokWrnfDvJVHl6qiV604x72cjf5hYyAkxJbUyAt0cHVaZ1qMD7FPAmVnkqtLMZeMT/kYQB7z772GRolwGxNtXZDHH8TNGerJfWHCyLiEztF61g7/rpCc7wdxhf0zEAM+Y45HT2P4vpuQIDAQAB;
Selector: selector2
(TXT on selector2._domainkey.bingo.com)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA1OVakCwI9DM0+kBdkFwCcvxIOa5htAWiiYdaI5PSk/JgkZ67N69QeUN36uHTNJMM5l8MiHG3wFyuktE1aG8d9HYKi6qXB9eq0VpLY0vrgcYXoC6hhRDa5D/SyXTzKZ+HM8q3bHX+n+K80IDSDAr9ZJuTxMY7YJ4YDLG6mKyjsz/Rsrx1/as2946z5jnIyCMijGS1sIltgUA7cgveR8YW2tCAeATPU9WEWI5F1SqHzOr+KkDyiut4Dbydh035+mMkJ2Ylgd0GYh6dVRK9Xdf6nXLf7AEWbyKUkePqQwYHFSfMnOq2C6HOQZ7SwcA6SsJV0+sxRHQD/dZGdZVYLu0eyQIDAQAB;
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.