Caching, TTL values, propagation delays, split DNS, filtering, DNSSEC handling and resolver location can produce different answers. The health scan checks public record publishing only: it does not query every authoritative server, fully validate SPF/DKIM/DMARC syntax, retrieve MTA-STS or BIMI files, test SMTP delivery, check reputation lists or prove that all users see the same records.

Important: Do not rely on this result alone for purchasing, configuration, security, safety, compliance, contractual or fault-diagnosis decisions. Results can be incomplete, delayed, misleading or wrong. Verify important findings with the relevant provider, manufacturer documentation and an appropriate independent test or qualified professional.