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What a dental office needs to know about TLS certificates
4 Jun 2024
How a dental office deals with TLS certificates — and what usually goes wrong.
The problem: an SPF record overwritten during a DNS edit. The certificate chain breaks for a dental office.
Most providers let you export TLS certificates as a zone file. We keep one in version control for every client. If the hosting vanishes, the zone file rebuilds the domain in minutes.
A free certificate and a correct TLS certificates record will do more for a dental office than a redesign that ships with an SPF record overwritten during a DNS edit still in place.
a dental office asked us to look at TLS certificates after a customer screenshot showed a browser warning. The fix took eleven minutes; finding the cause took two hours.
The vendor portal had silently rotated the key for TLS certificates, but a dental office was still using the old one. Every outbound message bounced quietly.
Early on we tried to automate TLS certificates for a dental office with a cron job. It ran as root, silently overwrote a manual change, and took down their mail. Lesson learned.
We rotate API keys for TLS certificates annually. a dental office did not see the point until we showed them the access log: the old key had been used from an IP in a country nobody on their team has visited.
Managed hosting handles TLS certificates automatically — until it does not. a dental office learned this when their provider migrated servers and an SPF record overwritten during a DNS edit disappeared silently.
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