Change let's encrypt to Wildcard

Infos:

  • Used Zammad version: 4.0.X
  • Used Zammad installation type: (source, package, docker-compose, …) package
  • Operating system: Ubuntu 20.04.2 LTS
  • Browser + version: Brave 1.28.106, Firefox 91.0.2

I installed Zammad for testing with a Let’s Encrypt certificate. Now 3 months have passed and I want to switch to a wildcard certificate.

are there instructions or recommendations for this?

I’m not very fit with Ubuntu.

I am grateful for any help.

Certificate stuff kinda is out of our application scope.
There are a lot of useful documentations and howtos that would help you on this path.

You basically want to get a new certificate to replace the existing one.
So “switching” is not exactly what you’re looking for.

Wildcard certificates require dns based issueing - you’ll have to ensure that this is something you or your provider can provide.
For certbot this is described here:
https://certbot.eff.org/docs/using.html?highlight=wildcard#dns-plugins

For acme.sh it’s described here:

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