Install Open Source Zimbra Mail Server

To install Zimbra, Download the latest version of “Zimbra Collaboration Open Source” form

At the time of this post, the latest version is 8.8.15 GA Release.

System Requirments

Zimbra recommends 8 GB of RAM. For detailed system requirements, see Zimbra System Requirements

I have installed it on servers with 4 GB RAM without any problem. If you are installing on a server with 4 GB RAM, make sure you add swap in cause you run out of RAM.

Set Hostname

Zimbra needs you to set the proper hostname for your server.

First, add an A record for your hostname and point it to your server IP.

Now edit /etc/hosts and add an entry like

Where is your FQDN.

Set MX Record

During installation Zimbra checks for MX records, so make sure you set MX record for your domain, point it to the server where you install Zimbra.

Install Zimbra on Ubuntu 20.04

Download the latest version of Zimbra from

To install Zimbra, run

It will ask some questions. For most questions, you can just press enter as that is the default option (Y).

Once install is done, you will be asked to set an admin password.

After the installation is done, you will be able to login to the Zimbra Admin area at

Webmail available at


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