No DKIM Record Found
No DKIM record found means the domain is not publishing the DKIM public key needed for receivers to verify signed messages. DKIM works by placing a cryptographic signature in the email header and publishing the matching public key in DNS under a selector hostname. If that selector record does not exist, receiving servers cannot validate the signature, even when the email came from a legitimate sender.
One-Minute Fix
Publish the exact DKIM selector TXT record provided by your email service under the selector hostname your sender actually uses.
selector1._domainkey.example.com TXT "v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8A..."If your sender uses selector1, the DKIM public key must exist at selector1._domainkey.example.com.
Re-checkWrong vs correct setup
Wrong setup
# No DKIM record published for selector1._domainkey.example.comThis is broken because the sender signs with a selector, but DNS does not publish the matching DKIM key. The receiver cannot retrieve the public key and DKIM verification fails.
Correct setup
selector1._domainkey.example.com TXT "v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8A..."This is the correct pattern. The selector record exists in DNS and publishes the DKIM public key the receiver needs for verification.
Why this happens
This usually happens when DKIM was never enabled in the sending platform, the DNS record was not added after setup, the selector hostname was copied incorrectly, or a DNS migration removed a record that active mail systems still depend on.
Why this is a problem
- Receivers cannot verify DKIM signatures.
- DMARC may fail if DKIM was expected to provide aligned authentication.
- Legitimate email can lose trust and land in spam.
- Brand spoofing becomes harder to control.
How this affects deliverability
Without a working DKIM record, your domain loses one of the strongest trust signals used by mailbox providers. That can weaken inbox placement, especially for transactional email, security notifications, and product mail where consistent authentication matters.
Common causes
- DKIM was never enabled in the sending platform.
- The selector TXT record was never added to DNS.
- The selector hostname was copied incorrectly.
- A DNS migration removed the DKIM record.
What we checked
We looked for the DKIM selector record needed to validate the signature. If no matching TXT record exists under the expected _domainkey hostname, DKIM cannot be verified.
Live DNS lookup. No login. No saved domains. No tracking.
FAQ
Does this mean my domain cannot send email at all?
No. Mail can still be sent, but receivers cannot verify the DKIM signature, which weakens trust and may hurt deliverability.
Can SPF compensate for missing DKIM?
Sometimes SPF may still pass, but relying on SPF alone is weaker. Modern deliverability and DMARC enforcement work best when both SPF and DKIM are healthy.
How do I fix this safely?
Get the exact DKIM selector record from the provider that signs your mail, publish it in DNS, then send a fresh test message and verify the signature passes.
Next steps
- Identify which platform signs your outgoing mail.
- Copy the exact selector hostname and public key from that provider.
- Publish the TXT record under _domainkey.
- Wait for DNS propagation.
- Send a fresh test email and verify DKIM now passes.
- Review the full troubleshooting guidance in the DKIM Hub.
- Explore sender authorization issues in the SPF Hub.
- Review alignment and policy issues in the DMARC Hub.