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 lestrade.biz
Found
Selector: google
(TXT on google._domainkey.lestrade.biz)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAm6cdojhAiOiI8bWl1WHlSUXZmu4vZ0gXj2wyG7T473z+P05slXfnI0RdkDwP2f3T8KvlIhC2J9gMMqTueww4udS7IhbWpge5LWQc11kV/qpwthgaInACyK0iC852HTUebbCcQIHMkEtKkuR1YonIGhM2K9aM0jP03ESiuSHEeYnMon3TlzWzzslY/v0mn05iXs3cIx3LzzrB/g/QDwC1xHNpbhpNspXV/qKIUuGEx8zH3nndtqiUnLS3quKyWGoILZL80wTLcqZ/mIDHon45AC3/KfxRguzznC3qzH81O17s7SWtoCLbOde9v8XqVK4u2XAjxO38+nLQFaFG78gwywIDAQAB
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.