Or, if you don't want to do the Docker thing and have daemons running on a 'regular' (Debian) system: * https://workaround.org/ispmail-bookworm/ https://workar

Or, if you don't want to do the Docker thing and have daemons running on a 'regular' (Debian) system: * https://workaround.org/ispmail-bookworm/ https://workaround.org/ispmail-bookworm/ (They include instructions for upgrading from their previous iterations, e.g., buster->bullseye->bookworm.)