DKIM records publish the public keys used to verify signed email. They help receiving systems confirm that a message was authorized by the sender and was not altered in transit.
DKIM adds a cryptographic signature to outgoing email. The receiving server uses the published DNS key to verify the message signature.
Use DKIM lookups when setting up Google Workspace, Microsoft 365, newsletter platforms, transactional email services, or after changing email providers.
The key thing is whether the expected selector record exists and returns the correct public key or provider-managed record.
Typical issues include wrong selector names, missing published keys, copying values incorrectly, or enabling sending before DKIM is fully configured.
Once you understand what to look for, run a live check using the tool below.
Launch DNS LookupDKIM is an email authentication method that uses cryptographic signatures to help verify legitimate email.
It improves trust, helps protect against tampering, and supports better email deliverability.
This page explains the purpose of the check, what results mean, and what problems to watch for before you run the live tool.
Feel free to reach out with any questions about Domain Registration, Web Hosting, Bulk SMS, or Website Design.
support@nellioncloud.com
+1 774 292 5087
50 W San Fernando St, Suite 900
San Jose, US.
Nellion Cloud