Description follows..
#Short instructions:
wget -O ~/perfectrootserver.tar.gz https://github.com/zypr/perfectrootserver/archive/v0.x.x.tar.gz
Extract:
tar -xzf ~/perfectrootserver.tar.gz -C ~/ --strip-components=1
Edit settings to your needs:
nano ~/userconfig.cfg
Start the installation script:
bash ~/install.sh
Follow the instructions!
At the end of the installation, the script creates a file with all the credentials. The wizard helps you set up your system and checks if the settings are correct.
Tip: Check out mailcow on github for a description of the mailserver features.