The Zimbra Open Source Collaboration Suite is designed to provide an end-to-end mail solution that is scalable and highly reliable. It consists of both a client and server components.
The web client provides a full-featured collaboration suite that supports email and group calendars.
The complete messaging architecture is built using open technology and well-known standards. It provides POP3 and IMAP access and relies on open-source applications such as Postfix, ClamAV and SpamAssassin.
During this tutorial you will learn how to install the latest version of open-source version of Zimbra on a Bare Metal Cloud Server running on Ubuntu Bionic Beaver server.
- You have an account and are logged into console.scaleway.com
- You have configured your SSH Key
- You have a Bare Metal Cloud Server running on Ubuntu Bionic Beaver (18.04 LTS)
- You have sudo privileges or access to the root user
- You have configured an A-record pointing to your servers IP address
- You have configured a valid reverse DNS for your IP address
1 . Connect to your server using SSH:
2 . Update your system to the latest version:
apt-get update && apt-get upgrade
3 . Edit your
/etc/hosts file so it looks like the following example:
220.127.116.11 zimbra.example.com zimbra 127.0.0.1 localhost
4 . Configure the DNS settings of your server by editing the file
/etc/resolv.conf. Set it to
18.104.22.168 to use Scaleway’s DNS servers.
nameserver 22.214.171.124 nameserver 126.96.36.199
5 . Download and extract the latest version of Zimbra
wget https://files.zimbra.com/downloads/8.8.15_GA/zcs-8.8.15_GA_3869.UBUNTU18_64.20190918004220.tgz tar xfz zcs-8.8.15_GA_3869.UBUNTU18_64.20190918004220.tgz
Important Request the download link for the latest version directly from Zimbra to make sure you are installing the latest version available.
6 . Enter the Zimbra directory:
7 . Run the Zimbra installation tool:
8 . Confirm that you agree to the software license, by typing
Do you agree with the terms of the software license agreement? [N]y
9 . Confirm that you want to use the repository of Zimbra, by pressing on
Use Zimbra's package repository [Y]
10 . Zimbra will ask you which packages to install. You can keep the default values confirm their installation by typing
Select the packages to install Install zimbra-ldap [Y] Install zimbra-logger [Y] Install zimbra-mta [Y] [...]
11 . Confirm the modification of the system by pressing
The system will be modified. Continue? [N]
The required packages will be downloaded and installed. This may take a while.
12 . By default Zimbra is configured to use the domain name
zimbra.example.com. Set it to your own domain name which you want to use for Zimbra, for example
DNS ERROR resolving MX for zimbra.example.com It is suggested that the domain name have an MX record configured in DNS Change domain name? [Yes] Y Create domain: [zimbra.example.com] mydomain.com MX: zimbra.mydomain.com (188.8.131.52) Interface: 127.0.0.1 Interface: 184.108.40.206 done.
13 . The Zimbra store configuration displays. Check the configuration:
Store configuration Main menu 1) Common Configuration: 2) zimbra-ldap: Enabled 3) zimbra-logger: Enabled 4) zimbra-mta: Enabled 5) zimbra-dnscache: Enabled 6) zimbra-snmp: Enabled 7) zimbra-store: Enabled +Create Admin User: yes +Admin user to create: email@example.com ******* +Admin Password UNSET +Anti-virus quarantine user: firstname.lastname@example.org +Enable automated spam training: yes +Spam training user: email@example.com +Non-spam(Ham) training user: firstname.lastname@example.org +SMTP host: zimbra.mydomain.com +Web server HTTP port: 8080 +Web server HTTPS port: 8443 +Web server mode: https +IMAP server port: 7143 +IMAP server SSL port: 7993 +POP server port: 7110 +POP server SSL port: 7995 +Use spell check server: yes +Spell server URL: http://zimbra.mydomain.com:7780/aspell.php +Enable version update checks: TRUE +Enable version update notifications: TRUE +Version update notification email: email@example.com +Version update source email: firstname.lastname@example.org +Install mailstore (service webapp): yes +Install UI (zimbra,zimbraAdmin webapps): yes 8) zimbra-spell: Enabled 9) zimbra-proxy: Enabled 10) Default Class of Service Configuration: s) Save config to file x) Expand menu q) Quit
14 . Press
4 to set the admin password, enter the new password and confirm by pressing
Password for email@example.com (min 6 characters): [BKY0Ag8lQ] Pa$$w0rd
15 . Press
r to go back to the main menu and press
a to apply the configuration:
Main menu 1) Common Configuration: 2) zimbra-ldap: Enabled 3) zimbra-logger: Enabled 4) zimbra-mta: Enabled 5) zimbra-dnscache: Enabled 6) zimbra-snmp: Enabled 7) zimbra-store: Enabled 8) zimbra-spell: Enabled 9) zimbra-proxy: Enabled 10) Default Class of Service Configuration: s) Save config to file x) Expand menu q) Quit *** CONFIGURATION COMPLETE - press 'a' to apply Select from menu, or press 'a' to apply config (? - help) a
16 . Press
Enter twice to save the configuration into a file. Then type
Yes and press
Enter to confirm the modification of the system:
Save configuration data to a file? [Yes] Save config in file: [/opt/zimbra/config.30902] Saving config in /opt/zimbra/config.30902...done. The system will be modified - continue? [No] Yes
The configuration of Zimbra will start.
Please note that this will take a while.
17 . You will be asked if you want to report your installation to Zimbra, you can type
no if you don’t want to do this:
Notify Zimbra of your installation? [Yes] no Notification skipped
18 . Once a message appears, the installation is complete. Press
Enter to exit the setup tool:
Moving /tmp/zmsetup.20200608-100842.log to /opt/zimbra/log Configuration complete - press return to exit
The installation of Zimbra Open Source is complete now and you can continue with the configuraion of your collaboration suite.
1 . You can now login to the admin console at
https://YOUR_SERVER_IP:7071/zimbraAdmin/. Use the user
firstname.lastname@example.org and the password that you have set during the installation to login:
2 . Once you are logged you can click on Get Started to begin with the configuration of the Zimbra server:
Add users and accounts as required.
The user interface of your Zimbra collaboration suite is available at
https://YOUR_SERVER_IP. Use your complete email address and password to login:
You can now check your emails, manage your contacts and your calendar.
By default Zimbra uses a self-signed certificate which can cause warnings in a web browser. To avoid these warnings, request a free Let’s Encrypt TLS/SSL certificate.
1 . Log into to your server, as
root user, via SSH, add the certbot repository, and install
certbot to manage the certificate:
apt install software-properties-common -y add-apt-repository universe add-apt-repository ppa:certbot/certbot apt update apt install certbot -y
2 . Switch into the Zimbra user:
3 . Stop the following services:
zmproxyctl stop zmmailboxdctl stop
4 . Exit from the Zimbra user:
6 . Lauch the following command to use the
certonly feature of certbot:
certbot certonly --standalone
Fill in the required information when asked. If you need a certificate for multiple domain names, specify them with the
certbot certonly --standalone -d example.com -d www.example.org
7 . The certificate has been issued once the following message appears:
- Congratulations! Your certificate and chain have been saved at: /etc/letsencrypt/live/example.com/fullchain.pem Your key file has been saved at: /etc/letsencrypt/live/example.com/privkey.pem
You can find the following files in the directory
cert.pem is the certificate
chain.pem is the chain
fullchain.pem is the concatenation of cert.pem + chain.pem
privkey.pem is the private key
chain.pem should look like:
-----BEGIN CERTIFICATE----- YOUR_CERTIFICATE -----END CERTIFICATE----- -----BEGIN CERTIFICATE----- MIIDSjCCAjKgAwIBAgIQRK+wgNajJ7qJMDmGLvhAazANBgkqhkiG9w0BAQUFADA/ MSQwIgYDVQQKExtEaWdpdGFsIFNpZ25hdHVyZSBUcnVzdCBDby4xFzAVBgNVBAMT DkRTVCBSb290IENBIFgzMB4XDTAwMDkzMDIxMTIxOVoXDTIxMDkzMDE0MDExNVow PzEkMCIGA1UEChMbRGlnaXRhbCBTaWduYXR1cmUgVHJ1c3QgQ28uMRcwFQYDVQQD Ew5EU1QgUm9vdCBDQSBYMzCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEB AN+v6ZdQCINXtMxiZfaQguzH0yxrMMpb7NnDfcdAwRgUi+DoM3ZJKuM/IUmTrE4O rz5Iy2Xu/NMhD2XSKtkyj4zl93ewEnu1lcCJo6m67XMuegwGMoOifooUMM0RoOEq OLl5CjH9UL2AZd+3UWODyOKIYepLYYHsUmu5ouJLGiifSKOeDNoJjj4XLh7dIN9b xiqKqy69cK3FCxolkHRyxXtqqzTWMIn/5WgTe1QLyNau7Fqckh49ZLOMxt+/yUFw 7BZy1SbsOFU5Q9D8/RhcQPGX69Wam40dutolucbY38EVAjqr2m7xPi71XAicPNaD aeQQmxkqtilX4+U9m5/wAl0CAwEAAaNCMEAwDwYDVR0TAQH/BAUwAwEB/zAOBgNV HQ8BAf8EBAMCAQYwHQYDVR0OBBYEFMSnsaR7LHH62+FLkHX/xBVghYkQMA0GCSqG SIb3DQEBBQUAA4IBAQCjGiybFwBcqR7uKGY3Or+Dxz9LwwmglSBd49lZRNI+DT69 ikugdB/OEIKcdBodfpga3csTS7MgROSR6cz8faXbauX+5v3gTt23ADq1cEmv8uXr AvHRAosZy5Q6XkjEGB5YGV8eAlrwDPGxrancWYaLbumR9YbK+rlmM6pZW87ipxZz R8srzJmwN0jP41ZL9c8PDHIyh8bwRLtTcm1D9SZImlJnt1ir/md2cXjbDaJWFBM5 JDGFoqgCWjBH4d1QB7wCCZAA62RjYJsWvIjJEubSfZGL+T0yjWW06XyxV3bqxbYo Ob8VZRzI9neWagqNdwvYkQsEjgfbKbYK7p2CNTUQ -----END CERTIFICATE-----
In short: chain.pem has to be merged with the root CA. First your certificate chain, and the end of the file the root CA. The order is important.
8 . Copy the Let’s Encrypt folder with all files
mkdir /opt/zimbra/ssl/letsencrypt mv /etc/letsencrypt/live/mydomain.com/* /opt/zimbra/ssl/letsencrypt/ chown zimbra:zimbra /opt/zimbra/ssl/letsencrypt/*
9 . Change into the Zimbra user:
10 . Verify the certificate:
cd /opt/zimbra/ssl/letsencrypt/ /opt/zimbra/bin/zmcertmgr verifycrt comm privkey.pem cert.pem chain.pem
If everything is working fine, the following message will appear:
** Verifying 'cert.pem' against 'privkey.pem' Certificate 'cert.pem' and private key 'privkey.pem' match. ** Verifying 'cert.pem' against 'chain.pem' Valid certificate chain: cert.pem: OK
11 . Backup the existing certificate:
cp -a /opt/zimbra/ssl/zimbra /opt/zimbra/ssl/zimbra.$(date "+%Y%m%d")
12 . Copy the private key into Zimbra’s SSL path:
cp /opt/zimbra/ssl/letsencrypt/privkey.pem /opt/zimbra/ssl/zimbra/commercial/commercial.key
13 . Finally deploy the SSL certificate:
/opt/zimbra/bin/zmcertmgr deploycrt comm cert.pem chain.pem
Note: This may take a little while
14 . Restart the Zimbra services:
15 . Go to
https://YOUR_SERVER_IP and you will notice that the connection is now signed by a valid certificate:
You have now installed successfully the Zimbra Collaboration Suite and secured it with Let’s Encrypt certificate. For more information regarding Zimbra Open Source edition, refer to the official documentation.