Dovecot Vs Courier
Well... Not sure I want to do that because it looks like most people are moving away from courier to dovecot because it appears to be a bit more lightweight, faster, and perhaps even more reliable (although I don't know about that last one).
If I do get rid of it, there must be an easier way of doing so than starting from scratch. I already have ISPConfig 3 setup the way I want it with a number of websites working perfectly.
I don't rely on using this server for email, so I am thinking that I may just hold off until there is a solution for dovecot support in ISPConfig 3.