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 usatoday.com
Found
Selector: selector1
(TXT on selector1._domainkey.usatoday.com)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAp2oVrDa2gFe1D7FluBi8+FrkA2YJUWvsDmacyU/bnBEAbG5tjSkr6zlv6JWHrndVKd1oStZx+ixaX/+lXjoWAMcaTo5awdrNTDrnLzRcqQ48CjLx+t1nlzcYhd7Y60pAmhtI07Fl7nqBN2Z+TsWUgUiIXq2iLUS4xwbFRI/TtS6yGi+Rn7TjeTINKxwyeruzvFhDqfqHneNb3Dwud2NcWPBlthCWZyHp0OA4WnKXeto5SnH1F4QCxeJDPGhSLlyk/chk1MzBt9jp+ScwX2VSlVFkaxq84LGI9erv2iIDQyoFXB7fp/3T7O4rMcyAovNYg51I949MAK5DBrld+1+ZcQIDAQAB;
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.