Hello, from my point of view Ubuntu 16.04 should support the newest version, monit 5.27.0.
Several old and new monit packages are available on https://bitbucket.org/tildeslash/monit/downloads/ or you get the latest version from https://mmonit.com/monit/ These are tar.gz archive files and bind to an more or less up to date openssl. The additional files and configuration samples bundled with the the monit dep archive are not available, but the configuration files are samples only and you can use these files after some little modifications with a more up to date monit version too. Have a look to monit 5.19.0 to support some old Linux kernels, or monit 5.27.0, the newest version. To get some information how to install a pre-build binary package see https://mmonit.com/wiki/Monit/Installation With regards, Lutz
