Many people have difficulty while want to install Zimbra. Usually, they not configure system to install zimbra with smoothly such as configure /etc/hosts, hostname, local dns and other service who can conflict with zimbra service like postfix, sendmail, apache and other.
This article will explain how to easy install Zimbra 8.5 especially on CentOS 7 with simple script. This script will automatically configure all settings who has been explained on previously article at this link http://imanudin.net/2014/10/05/how-to-install-zimbra-8-5-0-on-centos-7-part-1/. You just need to install CentOS minimal, configure network until connect to internet.
This script can you download at this link setup-zimbra-centos7.sh or you can manually download via wget
wget -c http://imanudin.net/wp-content/uploads/2014/10/setup-zimbra-centos7.sh chmod +x setup-zimbra-centos7.sh sh setup-zimbra-centos7.sh
You just need to answer every question was given. After all has been configured, you can starting install Zimbra with following this article http://imanudin.net/2014/10/06/how-to-install-zimbra-8-5-0-on-centos-7-part-2/
Good luck and hopefully useful 😀