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 nytimes.com
Found
Selector: google
(TXT on google._domainkey.nytimes.com)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAxPzd1FdX+tDLRwxu4INrM6izfw2Re6or0UJLy2FeoHMsyw3hphrHaLRFzH5EKjQc6hiBXFucXUIPMJEyw5V7hQfn/sNr93nge5bFbuvTO/N8U46OCkbm4SmK/TGpcnNnn62nvgN5bxo9UzW9D2z8josC97q0cA2G70lELRfR18EApuYCDj0ccfmCLyOwItCeav1yMHAIbg9z50mrTTL2lHh6J4iQcOIj5cdz8VQwnUnBCOOuGUteOd1JNR0yEx8UchBqcntQe4ktag7I4xCwxrXhmleCJeT0+9DDpuROICna0CqO2QMWqjdp8qeYdM/RW3rQx3uhprSTIUWeMM2LWwIDAQAB
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.