ckd When installing Grommunio from scratch on a Debian machine, installation of php-fpm will fail and you will be unable to start the gromox or nginx service. The reason is a missing folder for php-fm and the required sock file in the gromox folder. mkdir /run/php-fpm mkdir /run/gromox/php-fpm.sock chown gromox:gromox /run/gromox/php-fpm.sock