A DKIM record generator helps you publish selector-based public keys in DNS so mailbox providers can verify message signatures. Correct selector mapping is essential for stable deliverability.
Quick answer
A valid DKIM setup requires:
- selector hostname in the form
- TXT value with
- sender configuration that uses the same selector
- post-deploy validation with real message headers
DKIM record generation workflow
- Generate or retrieve DKIM key material from your sending platform.
- Choose a selector name for the current key version.
- Publish selector TXT record in DNS.
- Verify DNS propagation and selector readability.
- Send test messages and inspect
in headers.
Example selector record shape
Use your actual key material from your sending system.
Common DKIM generator mistakes
Selector mismatch
Teams often publish one selector but send with another. Always verify the selector in outbound headers.
Broken TXT formatting
Key values can break during copy/paste or DNS UI wrapping. Re-check exact TXT output.
No rotation process
Plan selector rotation cadence so old keys can be retired safely without downtime.
Validate and monitor DKIM health
After publishing a generated record, run:
Then verify signing outcomes with Email header analyzer.