Upgrade Zimbra and the OS Version

How can we help?
< All Topics

Upgrade Zimbra and the OS Version

Zimbra is an email platform that integrates with calendars, documents, contacts, and etc. It gives better collaboration experience within the user’s company by focusing on its scalability, data sovereignty, and security, makes it as one of the most-wanted collaboration tools in Cloud Raya.

Both, Cloud Raya and Zimbra want to continue our best service to our dearest customers by keep updating new version. This way, we can keep up with the users need while keeping them secured.

Recently, the latest version is available to be used. To get the most of its features and security protection, you must upgrade it as well as the OS version

Please follow the tutorial below:


Single-server Installation

  • RAM: 8 GB minimum
  • 50 GB free disk space minimum for software and logs
  • OS: Ubuntu based

Environment Set

In this setup, I use Ubuntu 16.04 as a starting point for the Zimbra operating system and ZCS-8.7.11 as the version of the Zimbra Collaboration.

The Zimbra has one administrative account and one user account as my initial data.

Reinstall the ZCS Version to the Latest

This section will explain how to reinstall the current Zimbra Collabora to the latest version.

  1. Before proceeding with the reinstall and the upgrade, please create a snapshot of the VM first – How to Make a Snapshot and Configure VM Backup in Cloud Raya
  2. Reinstall the ZCS version to the latest. You can get the installer based on the operating system in the following link – get zimbra collaboration open source or here for Ubuntu 16.04
  3. Navigate to the extracted folder of the ZCS installer then execute the install.sh file, with options --force-upgrade and --skip-upgrade-check
  4. The Zimbra installer file will scan the existing packages to upgrade and will prompt some confirmation questions to the packages that might want to be installed.

After successful reinstallation

  1. Email test flow after reinstalling
    Sender: mamad@mamadngelinux.my.id
    Recipient: ahmadnromiz@gmail.com, ahmad.naufal@wowrack.com

Upgrade the OS version

To upgrade Ubuntu to the next LTS version, simply enter do-release-upgrade in the CLI.

Some confirmation prompts may appear during the upgrade process, with the default value of configuration set to no.

Either keeping the previous configurations of the filesystem or replacing them with the maintainer preferences, those are dependent on your needs.


After the OS was successfully upgraded, do the Zimbra reinstallation steps as explained in the previous section.

Please note that the latest support of Ubuntu OS for Zimbra is 20.04 LTE. Thus, we only need to upgrade the OS to the 20.04 LTE version.

Final Email Flow Test

  • Sender: mamad@mamadngelinux.my.id, pop3@mamadngelinux.my.id
  • Recipient: ahmadnromiz@gmail.com, ahmad.naufal@wowrack.com



Now you are ready to use your latest version of zimbra and the OS. Please feel free to ask further information about this tutorial on the comment section.

Visit our knowledge base and blog page to get more tutorials and insights about technology.

Table of Contents

Ready, Set, Cloud

Ready, Set, Cloud