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 ufcwtraining.mb.ca
Found
Selector: selector1
(TXT on selector1._domainkey.ufcwtraining.mb.ca)
v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAvFysZ4YE5cGFC9kRngNPSdN+0woPLW+ExKSjnGJBiLS/LRZpx6iroq3HPvC/F8ojdGID8jukRNdB4WBKu6VRnoQhRfDGzt+94MKImWXp2o+yjtJlCKRYrpp//rYn+Z/nE21wvskWcxmbqlQi/oVZ58LaVLZUkKscjznZEtdllz38XcgaJLf3Qz1sjIV5uVFp/vGPu1rM9o7xnsnoX/FFjIDxYlTlm0s5fi+dLY6qMifZ9HIcwuN6wh38RAQFwTh6ztmbra8UuDmf6e/F/N8J23Lg0uI7HGy4+/Yw93yVpVxKDNRuB9t8sjs0276EeQOl7JcM+dW5yaYEXUSmNSAVXQIDAQAB;
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.