Use the free public DKIM Record Checker to inspect DKIM TXT (and CNAME) records, explain selectors and public keys, validate key strength, and surface configuration issues in plain English.
Developer Documentation
DKIM Record Checker
Public DKIM lookup tool with plain-English guidance.
What it checks
- Whether a DKIM record exists at
selector._domainkey.domain - Selector and domain are both required for a lookup
- Tags such as
v,k,p,h,s,t, andn - Public key Base64 validity, revocation (
p=empty), and RSA key length - Authentication strength rating and health score categories