Certificate and revocation-list expiry monitoring with early alerts

On schedule, the scenario walks your list of endpoints, parses certificates and revocation lists, checks both expiry dates and availability, and raises an alert by messenger and SMS when something is at risk.

• You learn about expiry in advance, not during an outage
• An unreachable endpoint is retried — fewer false alarms
• Alerts arrive through two channels at once: messenger and SMS
• Set the endpoint list once; the checking runs itself from then on