MTA-STS Studio
Full domain report
One domain in, the whole suite's checks out — DNS, DNSSEC, email authentication, BIMI, CAA, the live certificate and Certificate Transparency, as a single scorecard.
DNS, DNSSEC, SPF, DKIM, DMARC, MTA-STS, a deep mail-server audit, blacklist reputation, BIMI, TLS, certificate, HSTS, CAA and CT — graded A–F, in one go.
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Enter a domain to check its DNS, mail and certificate health in one place.