Zimbra Collaboration Suite is a collaborative software suite that includes an email server and web client. Use this guide to install it in Ubuntu server.
Zimbra Collaboration Multi-Server Installation Guide
How To Install Zimbra Collaboration Suite (ZCS) On Ubuntu - Page 3
How to install a Zimbra mail server on CentOS 8 - Quora
Install and Configure Zimbra Mail Server in Ubuntu/Debian
Install Zimbra on Ubuntu 20.04 Step by Step - inGuide
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Install Zimbra Collaboration Suite In Ubuntu
How to Install Zimbra Collaboration 8.7 on Ubuntu 14.04 LTS
Install and Configure Zimbra on Ubuntu 20.04 LTS
Zimbra Collaboration Administrator Guide