Zimbra Collaboration Suite (ZCS) or commonly known as Zimbra Mail, is a collaborative software suite that includes an email server and a web client. It also includes contacts, file sharing, calendar, tasks, etc which can be easily accessed via webmail.
Zimbra offers two editions, the commercially supported edition called ???Network Edition??? & a free/open-source version called ???Open Source Edition???, which is the focus of this tutorial. In this tutorial, we are going to discuss how to install Zimbra mail on CentOS & RHEL machines.