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 winamax.fr
Found
Selector: default
(TXT on default._domainkey.winamax.fr)
v=DKIM1; t=y; h=sha256; k=rsa; s=email; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAz5kDzCvCpoODL11fxtiU8BCpcxWhh4snfD8bAcRzQ+a/RobTznqiaOWdbFddsYMj5lRW//JWA+t7xZZwv1/GvwV6RLgLEDKHgGmT9bKxdNm/bDrg9P95IBVNwsKzb7QLo1Hc2YvNbrRLtyePbd0ygk7W6jMLc8NxceKSq9/SeKRxX3awaAvm/3tOPWiGzAkmOFm5nwIEQBxqTrU3zrV7C46RNvnyQVGBtAEsOt57VJ7gbd606KorbnKz6eHTz2q/vKDXupDzNdgeFl/HWv9Cr+SxOZk+UQ9VzGYpBC+3y3hR//Cm4sLT3QZDq6XY6pUq9JWWMAeslZjZHoGoV7E5/QIDAQAB
Selector: google
(TXT on google._domainkey.winamax.fr)
v=DKIM1; k=rsa;p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAmuPqb8d8JMdFDnsswl3xyN/GYsu20+XYr3PJ8sn41WTr5wJHy4TO6HggIddIFP9CoQGGEKvQEDqnL402OidBgU0INpfirODMKpn5CYWvHZscQYAJjbzTJMcMcVl97gDwDMO2Fe2yDZhy6BUiirWxhkGw5k00UcQBFj4BqTliuq2VKfEfw0/zZ4WZ/ZsgldAx7YKpfJZbeeETqXs4xLTL6w+dY4WRcROxsXaLTOk4vR/In+edHizX1V9zGIuIa3yK+iSqXl3SVS1qojQxQ2YdR7++maCYsqB4Mew6b0I/bgHXNpj+UClgz3IMr2h23Z7Off2h9Ct31aPs4QT0WXd+DwIDAQAB
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.