I followed the tutorial Server Monitoring With munin And monit On Debian Wheezy by Falko Timme and I think it worked! I made some small additions in order to monitor Exim4 and Dovecot based on the Monit configuration examples on their wiki and some notes on self-signed certificates from the Debian wiki.
Server Monitoring With munin And monit On Debian Wheezy
For my future self trying to figure out what the hell is going on:
https://alexschroeder.ch/munin/
https://alexschroeder.ch:2812/
Nice! 👌
​#Administration