I am trying to build a guide for utilizing Let's Encrypt for a custom FQDN with the Linux install of 3CX. The documentation online does not seem to indicate where the SSL files are stored, and what components utilize those files. I have found the NGINX configuration and the related certificate files for it, but I am not sure if any of the 3CX services also utilize those certificates, or if they are stored in an additional location. If it is just the NGINX web server utilizing the certificates then this should be fairly straightforward. Thanks!