A browser warning on a client site made them panic. Visitors were seeing a “not secure” message, and the contact form submissions dropped sharply that day.
I ran it through an SSL checker and found an expired certificate and a chain issue. Once renewed, the warning disappeared. Now I check certificate expiry dates every few months and set calendar reminders.
Do you rely on auto-renewal, or monitor manually? I’d like to hear how others avoid surprise expirations. Has anyone had auto-renewal fail silently, and how did you find out?