Traefik and mailserver

Hi there,

I have Nextcloud running in a LXC on a proxmox server at home.
For this I did portforwarding.
However I was thinking of putting it behind Traefik. But how do I proceed to have the mail and talk apps also behind the Traefik, or is this not possible?
Can somebody shed a light on this?

The mail app is a client, so no incoming port is needed there.

For Talk you need the TURN port.

See the reverse proxy section for some other info.