We use LetsEncrypt and monitor the SSL certificate expiration dates locally by parsing the actual certificate files, but if you require a way to remotely monitor a third-party SSL certificate in order to ensure that the renewal process hasn't failed, here’s some #cfml / #java to do just that.
Source
from: https://dev.to//gamesover/identify-ssl-expiration-date-using-coldfusion-1lm5
