Hello,
I wanted to use HAProxy in front of Proxmox to make Proxmox accessible from the internet for administration by other people.
I have set up a frontend bound to Port 443 with my wildcard cert aquired with certbot.
I have been experimenting for hours to find a configuration for the backend which would work without results.
For some unknown reason my browser complains about no (!) encryption at all and thus won't connect.

I have put my whole HAProxy configuration in a pastebin: https://pastebin.com/sBTqtc8m
What I tried so far:

• Alle the uncommented backend server configurations
• HTTP to HTTPS redirection (didn't work in general)
• Proxmox node domain and acme configuration -> proxmox.mydomain.dev

I wasn't able to find anything helpful on the internet that worked for me.