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 leboncoin.fr
Found
Selector: google
(TXT on google._domainkey.leboncoin.fr)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAv/GvpUyodicZj6HPxnTXrT05YDdzJ70vzXBDXNw/cQivDmnn9wdSaSqbKCVxV6a+tSrA9xm1uHM5IUZy0r6KSafDiT/KR/gh4hwYpXJwxN+IlLtdBF4HCHXNns3gFX4o98JQ0/7LoF/1yapFY0+RtaXzWdIu0WRiSWNPdPOTUuNnif33fz7u4E/JJotS3IWoJPSDISiHGY8Jfd0e52X7zU9ke+GcVDhy/hbU57H9HH7MEwbPX6hsXt2WMp+7S3t8GGmliTiRxPPcIGbzBUo0JTEVOHeOiEzkMSZGmFknCuYzJ3Y4c3zitt1+pWe9SRkfUrjYDo/X8GFewa9aNp9fRQIDAQAB
Selector: mail
(TXT on mail._domainkey.leboncoin.fr)
v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDjhsxIJqJSlE/N/HBEblsJuHsyaZqxWCB88RLumBj1/dOvHjRbKZ4fM5XcK1eDkwuYAH16bashaLX/wMlSn6Vcqpso+VbXRnKewjpXDduepFTDAY00fJ95zQMoNXBpbHnWODbwaep4HShXdbHPBqjKc7h7I2k9I+WXgrhtgkfX/wIDAQAB
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.