Add certificate expiration warning in "Monitoring"

Feature requests
1

  1. What is your original issue/pain point you want to solve?
    I am able to add SSL-certificates in a lot of situations in Zammad now. They usually expire. While you can handle update reminders outside of Zammad, it would be nice, if Zammad warns if a used certificate is about to expire.

  2. Which are one or two concrete situations where this problem hurts the most?
    I use a SSL certificate in Zammad to secure my SAML-authentication and my certificate expires, so my users are not able to login.

I use M365-authentication and the client secret expires, so my users are not able to login.

  1. Why is it not solvable with the Zammad standard?
    There is no warning about upcoming expirations.

  2. What is your expectation/what do you want to achieve?
    Display a warning in “Monitoring” when a used certificate is about to expire.

2

I use M365-authentication and the client secret expires, so my users are not able to login.

About the second use case, I think we do not have any detailed information in the M365 Third-Party authentication context.