Domain & SSL Health Check
An expired SSL certificate takes your website offline and shreds customer trust in a single browser warning — and broken DNS or a blacklisted mail server quietly kills your email. Enter your domain to check the SSL/TLS certificate (issuer, expiry and hostname match), your DNS records and common mail blacklists live, then get a clear, prioritised list of what to fix.
Domain health for —
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SSL/TLS certificate
DNS & resolution
Mail blacklists best-effort
We resolve your domain’s IP and query a couple of public DNS blacklists (DNSBLs) via public resolvers. This is a quick indicator only — public-resolver checks can be rate-limited or inconclusive, so treat a clean result as reassuring but not definitive.
Prioritised fixes
Strong result — the certificate is valid, DNS resolves cleanly and we found no blacklist hits. Keep certificate auto-renewal and expiry monitoring switched on so nothing lapses.
Let’s keep your domain healthy
Never get caught out by an expired certificate again — talk to Peritus.
Our Newcastle team sets up automated SSL renewal and expiry monitoring, fixes DNS and mail-deliverability problems, and keeps your domain off blacklists — so your site stays up and your email lands in the inbox. Send your result through and we’ll come back with clear next steps.
Prefer to talk? Call 02 4081 9500.