efa-project.org

I recently installed by first EFA Vm.

I have noticed point release .8 is now out, think I was on 5 or 6 when I built it, now on 7. I have made some changes in the main.cf file, if I upgrade to .8 will any of the configuration files be replaced?

Nope, 3.0.1.8 only touches MailWatch, actually and doesn't have a postfix update.

Even with a postfix update, an effort is made to both preserve the config and back it up prior to the update.