[Update in July 2017 from original author @ebonsi:  Make a note of it! This tutorial is now reaching its age (old) as Letsencrypt Certs renewing evolved to certbot! Certain things still useful, like Apache redirects but everything related to LE installatin needs to be updated. I will do when time sort it out!]  My first test of LetsEncrypt on my OS X Server was based on these instructions;      First I would like to give my thanks to @effg to had take the time to share his experiences on install...