How the domain check works
A clear view of public domain and email configuration
- 01
Normalize and validate the domain
The checker accepts a bare domain or HTTP/HTTPS address, removes website-only parts and rejects private, internal or malformed targets.
- 02
Read bounded public evidence
DNS records, mail authentication, MX targets, HTTP routing and the public TLS certificate are inspected without logging in or changing anything.
- 03
Score the domain in context
DNS, email authentication, mail routing and website/SSL use transparent rules. A domain with no mail service is not unfairly penalized for missing mail records.
Important DKIM and delivery limits
DKIM selectors cannot be exhaustively discovered from public DNS. The checker tests your supplied selector plus a small common set. Public records also cannot prove inbox placement, message signing in practice or provider-side delivery behavior.