How to install Zimbra on CentOS 7

Learn how to install Zimbra on CentOS 7 with this comprehensive guide. Follow our step-by-step instructions to set up and configure Zimbra, the powerful email and collaboration platform, on your CentOS 7 system. #centlinux #linux #mailserver

What is Zimbra?

Zimbra Collaboration Suite (ZCS) is a collaborative software suite that includes a mail & chat server with a web client. Zimbra is developed and maintained by Synacor. Zimbra is available in two editions one as Zimbra Network Edition (Commercial version) and the other as Zimbra Open Source Edition (Community supported version).

Here are the key features and aspects of Zimbra:

Email Services:

• Provides a full-featured email server, supporting both IMAP and POP3 protocols for email retrieval and SMTP for email sending.

Collaboration Tools:

• Includes shared calendars, contacts, tasks, and document storage, allowing team members to collaborate effectively.

Web-based Interface:

• Offers a powerful, user-friendly web client for accessing email and collaboration tools, eliminating the need for desktop email clients.

Mobile and Desktop Synchronization:

• Supports synchronization with mobile devices and desktop clients, ensuring users can access their emails, contacts, and calendars from anywhere.

Advanced Security:

• Provides robust security features such as spam and virus protection, encryption, and secure authentication mechanisms.

Scalability:

• Suitable for both small businesses and large enterprises, Zimbra can scale to meet the needs of growing organizations.

Open-source and Commercial Versions:

• Available in an open-source community edition and a commercial network edition, which includes additional features and professional support.

Customization and Integration:

• Supports integration with other enterprise applications and allows customization to meet specific business needs through APIs and extensions.

Key Components:

• Zimbra Collaboration Suite (ZCS): The main product that includes all the email and collaboration features.
• Zimbra Desktop: An email client that can be used offline and syncs with the Zimbra server.
• Zimbra Mobile: Provides mobile access to emails and other collaboration tools.

Benefits of Using Zimbra:

Unified Communication:

• Combines email, calendaring, and collaboration tools in one platform, streamlining communication.

Cost-effective:

• The open-source version is free, and the commercial version offers competitive pricing with professional support.

Enhanced Productivity:

• Integrated collaboration tools help improve productivity by making it easier to share information and coordinate tasks.

Cross-platform Compatibility:

• Accessible from various devices and operating systems, ensuring flexibility for users.

Strong Community and Support:

• A large community of users and developers contribute to the platform, providing support, plugins, and enhancements.

Overall, Zimbra is a versatile and powerful solution for managing email and collaboration needs within an organization, offering a rich set of features and the flexibility to meet various business requirements.

Zimbra Collaboration Suite (ZCS) is a large software with a lots of features and functionality. We are only covering the installation and initial configuration of Zimbra Collaboration Suite (ZCS). However, For more information you can refer to Zimbra documentation.

Recommended Online Training: Learn Bash Shell in Linux for Beginners

Zimbra System Requirements

According to Zimbra documentation following are the minimum system requirements.

• CPU – 1.5 Ghz
• Memory – 8 GB
• Storage – 5 GB for ZCS installation

Read Also: How to install iRedMail on CentOS 7

Environment Specification

In this article, we will install Zimbra on CentOS 7. To configure a Zimbra mail server, we will install Zimbra Collaboration Suite software and then we will configure Zimbra mail server. We will also configure a XMPP chat server using Zimbra Collaboration Suite (ZCS).

We have configured a CentOS 7 virtual machine with following specifications.

• CPU – 3.4 Ghz (2 cores)
• Memory – 2 GB
• Storage – 40 GB
• Operating System – CentOS 7.6
• Hostname – zimbra-01.example.com
• IP Address – 192.168.116.6/24

Verify DNS Settings for Zimbra Mail Server

Connect with zimbra-01.example.com using ssh as root user.

Before configuring a private mail server, it is mandatory to have an Authoritative DNS Server. This DNS server is required to answer MX (Mail Exchange) queries, so the emails should be redirected to our Zimbra mail server.

If you have a DNS Server then you can add MX and A record of zimbra-01.example.com therein.

To verify that we have configured our DNS settings for our Zimbra mail server correctly, we can use dig command.

# dig -t MX example.com

; <<>> DiG 9.9.4-RedHat-9.9.4-74.el7_6.2 <<>> -t MX example.com
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 65089
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 2

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;example.com.                   IN      MX

;; ANSWER SECTION:
example.com.            3600    IN      MX      0 zimbra-01.example.com.

;; AUTHORITY SECTION:
example.com.            3600    IN      NS      dns-01.example.com.

;; ADDITIONAL SECTION:
zimbra-01.example.com.  3600    IN      A       192.168.116.6

;; Query time: 1 msec
;; SERVER: 192.168.116.6#53(192.168.116.6)
;; WHEN: Mon Aug 12 18:02:16 PKT 2019
;; MSG SIZE  rcvd: 96

From the above output, we can see that, the MX and A records for our Zimbra mail server has been defined correctly.

Besides DNS settings, we are required to include it in our local DNS resolver.

# echo "192.168.116.6 zimbra-01.example.com zimbra-01" >> /etc/hosts

Stop Existing MTA service

By default, CentOS 7 installs Postfix as MTA (Mail Transfer Agent). We need to disable it before moving on to Zimbra Collaboartion Suite (ZCS) installation.

Stop and disable postfix.service.

# systemctl stop postfix.service
# systemctl disable postfix.service
Removed symlink /etc/systemd/system/multi-user.target.wants/postfix.service.
# systemctl mask postfix.service
Created symlink from /etc/systemd/system/postfix.service to /dev/null.

Install Zimbra Prerequisites

Install required software packages using yum command.

# yum install -y libidn gmp perl perl-core ntpl nmap sudo sysstat sqlite libaio libstdc++ wget unzip

Install Zimbra on CentOS 7

Zimbra Collaboration Suite – Open Source Edition can be downloaded from Zimbra Official download page.

# cd /tmp
# wget https://files.zimbra.com/downloads/8.8.12_GA/zcs-8.8.12_GA_3794.RHEL7_64.20190329045002.tgz
--2019-08-14 13:40:21--  https://files.zimbra.com/downloads/8.8.12_GA/zcs-8.8.12_GA_3794.RHEL7_64.20190329045002.tgz
Resolving files.zimbra.com (files.zimbra.com)... 13.35.207.223
Connecting to files.zimbra.com (files.zimbra.com)|13.35.207.223|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: 254480139 (243M) [binary/octet-stream]
Saving to: âzcs-8.8.12_GA_3794.RHEL7_64.20190329045002.tgzâ

100%[======================================>] 254,480,139  594KB/s   in 9m 47s

2019-08-14 13:50:10 (423 KB/s) - âzcs-8.8.12_GA_3794.RHEL7_64.20190329045002.tgzâ saved [254480139/254480139]

Extract downloaded TAR file to install Zimbra on CentOS 7.

# tar xf zcs-8.8.12_GA_3794.RHEL7_64.20190329045002.tgz

Go to Zimbra Collaboration Suite setup directory and start installation.

# cd zcs-8.8.12_GA_3794.RHEL7_64.20190329045002/
# ./install.sh

Operations logged to /tmp/install.log.3sG1LbQb
Checking for existing installation...
    zimbra-drive...NOT FOUND
    zimbra-imapd...NOT FOUND
    zimbra-patch...NOT FOUND
    zimbra-mta-patch...NOT FOUND
    zimbra-proxy-patch...NOT FOUND
    zimbra-license-tools...NOT FOUND
    zimbra-license-extension...NOT FOUND
    zimbra-network-store...NOT FOUND
    zimbra-network-modules-ng...NOT FOUND
    zimbra-chat...NOT FOUND
    zimbra-talk...NOT FOUND
    zimbra-ldap...NOT FOUND
    zimbra-logger...NOT FOUND
    zimbra-mta...NOT FOUND
    zimbra-dnscache...NOT FOUND
    zimbra-snmp...NOT FOUND
    zimbra-store...NOT FOUND
    zimbra-apache...NOT FOUND
    zimbra-spell...NOT FOUND
    zimbra-convertd...NOT FOUND
    zimbra-memcached...NOT FOUND
    zimbra-proxy...NOT FOUND
    zimbra-archiving...NOT FOUND
    zimbra-core...NOT FOUND


----------------------------------------------------------------------
PLEASE READ THIS AGREEMENT CAREFULLY BEFORE USING THE SOFTWARE.
SYNACOR, INC. ("SYNACOR") WILL ONLY LICENSE THIS SOFTWARE TO YOU IF YOU
FIRST ACCEPT THE TERMS OF THIS AGREEMENT. BY DOWNLOADING OR INSTALLING
THE SOFTWARE, OR USING THE PRODUCT, YOU ARE CONSENTING TO BE BOUND BY
THIS AGREEMENT. IF YOU DO NOT AGREE TO ALL OF THE TERMS OF THIS
AGREEMENT, THEN DO NOT DOWNLOAD, INSTALL OR USE THE PRODUCT.

License Terms for this Zimbra Collaboration Suite Software:
https://www.zimbra.com/license/zimbra-public-eula-2-6.html
----------------------------------------------------------------------



Do you agree with the terms of the software license agreement? [N] Y





Use Zimbra's package repository [Y] Y

Importing Zimbra GPG key

Configuring package repository

Checking for installable packages

Found zimbra-core (local)
Found zimbra-ldap (local)
Found zimbra-logger (local)
Found zimbra-mta (local)
Found zimbra-dnscache (local)
Found zimbra-snmp (local)
Found zimbra-store (local)
Found zimbra-apache (local)
Found zimbra-spell (local)
Found zimbra-memcached (repo)
Found zimbra-proxy (local)
Found zimbra-drive (repo)
Found zimbra-imapd (local)
Found zimbra-patch (repo)
Found zimbra-mta-patch (repo)
Found zimbra-proxy-patch (repo)


Select the packages to install

Install zimbra-ldap [Y] Y

Install zimbra-logger [Y] Y

Install zimbra-mta [Y] Y

Install zimbra-dnscache [Y] N

Install zimbra-snmp [Y] Y

Install zimbra-store [Y] Y

Install zimbra-apache [Y] Y

Install zimbra-spell [Y] Y

Install zimbra-memcached [Y] Y

Install zimbra-proxy [Y] Y

Install zimbra-drive [Y] Y

Install zimbra-imapd (BETA - for evaluation only) [N] N

Install zimbra-chat [Y] Y
Checking required space for zimbra-core
Checking space for zimbra-store
Checking required packages for zimbra-store
zimbra-store package check complete.

Installing:
    zimbra-core
    zimbra-ldap
    zimbra-logger
    zimbra-mta
    zimbra-snmp
    zimbra-store
    zimbra-apache
    zimbra-spell
    zimbra-memcached
    zimbra-proxy
    zimbra-drive
    zimbra-patch
    zimbra-mta-patch
    zimbra-proxy-patch
    zimbra-chat

The system will be modified.  Continue? [N] Y

Beginning Installation - see /tmp/install.log.3sG1LbQb for details...

                          zimbra-core-components will be downloaded and installed.
                            zimbra-timezone-data will be installed.
                          zimbra-common-core-jar will be installed.
                         zimbra-common-mbox-conf will be installed.
                   zimbra-common-mbox-conf-attrs will be installed.
                    zimbra-common-mbox-conf-msgs will be installed.
                  zimbra-common-mbox-conf-rights will be installed.
                           zimbra-common-mbox-db will be installed.
                         zimbra-common-mbox-docs will be installed.
                   zimbra-common-mbox-native-lib will be installed.
                         zimbra-common-core-libs will be installed.
                                     zimbra-core will be installed.
                          zimbra-ldap-components will be downloaded and installed.
                                     zimbra-ldap will be installed.
                                   zimbra-logger will be installed.
                           zimbra-mta-components will be downloaded and installed.
                                      zimbra-mta will be installed.
                          zimbra-snmp-components will be downloaded and installed.
                                     zimbra-snmp will be installed.
                         zimbra-store-components will be downloaded and installed.
                       zimbra-jetty-distribution will be downloaded and installed.
                                zimbra-mbox-conf will be installed.
                                 zimbra-mbox-war will be installed.
                             zimbra-mbox-service will be installed.
                       zimbra-mbox-webclient-war will be installed.
                   zimbra-mbox-admin-console-war will be installed.
                          zimbra-mbox-store-libs will be installed.
                                    zimbra-store will be installed.
                        zimbra-apache-components will be downloaded and installed.
                                   zimbra-apache will be installed.
                         zimbra-spell-components will be downloaded and installed.
                                    zimbra-spell will be installed.
                                zimbra-memcached will be downloaded and installed.
                         zimbra-proxy-components will be downloaded and installed.
                                    zimbra-proxy will be installed.
                                    zimbra-drive will be downloaded and installed (later).
                                    zimbra-patch will be downloaded and installed (later).
                                zimbra-mta-patch will be downloaded and installed.
                              zimbra-proxy-patch will be downloaded and installed (later).
                                     zimbra-chat will be downloaded and installed (later).

Downloading packages (11):
   zimbra-core-components
   zimbra-ldap-components
   zimbra-mta-components
   zimbra-snmp-components
   zimbra-store-components
   zimbra-jetty-distribution
   zimbra-apache-components
   zimbra-spell-components
   zimbra-memcached
   zimbra-proxy-components
   zimbra-mta-patch
      ...done

Installing local packages (25):
   zimbra-timezone-data
   zimbra-common-core-jar
   zimbra-common-mbox-conf
   zimbra-common-mbox-conf-attrs
   zimbra-common-mbox-conf-msgs
   zimbra-common-mbox-conf-rights
   zimbra-common-mbox-db
   zimbra-common-mbox-docs
   zimbra-common-mbox-native-lib
   zimbra-common-core-libs
   zimbra-core
   zimbra-ldap
   zimbra-logger
   zimbra-mta
   zimbra-snmp
   zimbra-mbox-conf
   zimbra-mbox-war
   zimbra-mbox-service
   zimbra-mbox-webclient-war
   zimbra-mbox-admin-console-war
   zimbra-mbox-store-libs
   zimbra-store
   zimbra-apache
   zimbra-spell
   zimbra-proxy
      ...done

Installing extra packages (4):
   zimbra-drive
   zimbra-patch
   zimbra-proxy-patch
   zimbra-chat
      ...done

Running Post Installation Configuration:
Operations logged to /tmp/zmsetup.20190817-132218.log
Installing LDAP configuration database...done.
Setting defaults...sh: /sbin/ifconfig: No such file or directory


DNS ERROR resolving MX for zimbra-01.example.com
It is suggested that the domain name have an MX record configured in DNS
Change domain name? [Yes] Yes
Create domain: [zimbra-01.example.com] example.com
        MX: zimbra-01.example.com (192.168.116.6)

        Interface: 127.0.0.1
        Interface: ::1
        Interface: 192.168.116.6
done.
Checking for port conflicts
sh: netstat: command not found

Main menu

   1) Common Configuration:
   2) zimbra-ldap:                             Enabled
   3) zimbra-logger:                           Enabled
   4) zimbra-mta:                              Enabled
   5) zimbra-snmp:                             Enabled
   6) zimbra-store:                            Enabled
        +Create Admin User:                    yes
        +Admin user to create:                 admin@example.com
******* +Admin Password                        UNSET
        +Anti-virus quarantine user:           virus-quarantine.kfw6kh_swc@example.com
        +Enable automated spam training:       yes
        +Spam training user:                   spam.7ohtsxbil@example.com
        +Non-spam(Ham) training user:          ham.wbopzrgn@example.com
        +SMTP host:                            zimbra-01.example.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-01.example.com:7780/aspell.php
        +Enable version update checks:         TRUE
        +Enable version update notifications:  TRUE
        +Version update notification email:    admin@example.com
        +Version update source email:          admin@example.com
        +Install mailstore (service webapp):   yes
        +Install UI (zimbra,zimbraAdmin webapps): yes

   7) zimbra-spell:                            Enabled
   8) zimbra-proxy:                            Enabled
   9) Default Class of Service Configuration:
   s) Save config to file
   x) Expand menu
   q) Quit

Address unconfigured (**) items  (? - help)

You can see that, the Admin user password is not set for Zimbra mail server.

To set Zimbra’s Admin password press 6 and <ENTER>.

Address unconfigured (**) items  (? - help) 6


Store configuration

   1) Status:                                  Enabled
   2) Create Admin User:                       yes
   3) Admin user to create:                    admin@example.com
** 4) Admin Password                           UNSET
   5) Anti-virus quarantine user:              virus-quarantine.kfw6kh_swc@example.com
   6) Enable automated spam training:          yes
   7) Spam training user:                      spam.7ohtsxbil@example.com
   8) Non-spam(Ham) training user:             ham.wbopzrgn@example.com
   9) SMTP host:                               zimbra-01.example.com
  10) Web server HTTP port:                    8080
  11) Web server HTTPS port:                   8443
  12) Web server mode:                         https
  13) IMAP server port:                        7143
  14) IMAP server SSL port:                    7993
  15) POP server port:                         7110
  16) POP server SSL port:                     7995
  17) Use spell check server:                  yes
  18) Spell server URL:                        http://zimbra-01.example.com:7780/aspell.php
  19) Enable version update checks:            TRUE
  20) Enable version update notifications:     TRUE
  21) Version update notification email:       admin@example.com
  22) Version update source email:             admin@example.com
  23) Install mailstore (service webapp):      yes
  24) Install UI (zimbra,zimbraAdmin webapps): yes

Select, or 'r' for previous menu [r]

Now press 4 and <ENTER>. At the password prompt set a new password of Zimbra Admin user.

Select, or 'r' for previous menu [r] 4

Password for admin@example.com (min 6 characters): [sICqjq5vZM] ahmer1234

Store configuration

   1) Status:                                  Enabled
   2) Create Admin User:                       yes
   3) Admin user to create:                    admin@example.com
   4) Admin Password                           set
   5) Anti-virus quarantine user:              virus-quarantine.kfw6kh_swc@example.com
   6) Enable automated spam training:          yes
   7) Spam training user:                      spam.7ohtsxbil@example.com
   8) Non-spam(Ham) training user:             ham.wbopzrgn@example.com
   9) SMTP host:                               zimbra-01.example.com
  10) Web server HTTP port:                    8080
  11) Web server HTTPS port:                   8443
  12) Web server mode:                         https
  13) IMAP server port:                        7143
  14) IMAP server SSL port:                    7993
  15) POP server port:                         7110
  16) POP server SSL port:                     7995
  17) Use spell check server:                  yes
  18) Spell server URL:                        http://zimbra-01.example.com:7780/aspell.php
  19) Enable version update checks:            TRUE
  20) Enable version update notifications:     TRUE
  21) Version update notification email:       admin@example.com
  22) Version update source email:             admin@example.com
  23) Install mailstore (service webapp):      yes
  24) Install UI (zimbra,zimbraAdmin webapps): yes

Select, or 'r' for previous menu [r]

Press r and <ENTER> to go back to previous menu.

Select, or 'r' for previous menu [r] r

Main menu

   1) Common Configuration:
   2) zimbra-ldap:                             Enabled
   3) zimbra-logger:                           Enabled
   4) zimbra-mta:                              Enabled
   5) zimbra-snmp:                             Enabled
   6) zimbra-store:                            Enabled
   7) zimbra-spell:                            Enabled
   8) zimbra-proxy:                            Enabled
   9) 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)

Press a and <ENTER> to apply changes.

*** CONFIGURATION COMPLETE - press 'a' to apply
Select from menu, or press 'a' to apply config (? - help) a
Save configuration data to a file? [Yes]
Save config in file: [/opt/zimbra/config.15688]
Saving config in /opt/zimbra/config.15688...done.
The system will be modified - continue? [No] Yes
Operations logged to /tmp/zmsetup.20190817-132218.log
Setting local config values...done.
Initializing core config...Setting up CA...done.
Deploying CA to /opt/zimbra/conf/ca ...done.
Creating SSL zimbra-store certificate...done.
Creating new zimbra-ldap SSL certificate...done.
Creating new zimbra-mta SSL certificate...done.
Creating new zimbra-proxy SSL certificate...done.
Installing mailboxd SSL certificates...done.
Installing MTA SSL certificates...done.
Installing LDAP SSL certificate...done.
Installing Proxy SSL certificate...done.
Initializing ldap...done.
Setting replication password...done.
Setting Postfix password...done.
Setting amavis password...done.
Setting nginx password...done.
Setting BES searcher password...done.
Creating server entry for zimbra-01.example.com...done.
Setting Zimbra IP Mode...done.
Saving CA in ldap...done.
Saving SSL Certificate in ldap...done.
Setting spell check URL...done.
Setting service ports on zimbra-01.example.com...done.
Setting zimbraFeatureTasksEnabled=TRUE...done.
Setting zimbraFeatureBriefcasesEnabled=TRUE...done.
Checking current setting of zimbraReverseProxyAvailableLookupTargets
Querying LDAP for other mailstores
Searching LDAP for reverseProxyLookupTargets...done.
Adding zimbra-01.example.com to zimbraReverseProxyAvailableLookupTargets
Updating zimbraLDAPSchemaVersion to version '1537783098'
Setting TimeZone Preference...done.
Disabling strict server name enforcement on zimbra-01.example.com...done.
Initializing mta config...done.
Setting services on zimbra-01.example.com...done.
Adding zimbra-01.example.com to zimbraMailHostPool in default COS...done.
Creating domain example.com...done.
Setting default domain name...done.
Creating domain example.com...already exists.
Creating admin account admin@example.com...done.
Creating root alias...done.
Creating postmaster alias...done.
Creating user spam.7ohtsxbil@example.com...done.
Creating user ham.wbopzrgn@example.com...done.
Creating user virus-quarantine.kfw6kh_swc@example.com...done.
Setting spam training and Anti-virus quarantine accounts...done.
Initializing store sql database...done.
Setting zimbraSmtpHostname for zimbra-01.example.com...done.
Configuring SNMP...done.
Setting up syslog.conf...done.
Starting servers...done.
Installing common zimlets...
        com_zimbra_adminversioncheck...done.
        com_zimbra_attachcontacts...done.
        com_zimbra_attachmail...done.
        com_zimbra_bulkprovision...done.
        com_zimbra_cert_manager...done.
        com_zimbra_clientuploader...done.
        com_zimbra_date...done.
        com_zimbra_email...done.
        com_zimbra_mailarchive...done.
        com_zimbra_phone...done.
        com_zimbra_proxy_config...done.
        com_zimbra_srchhighlighter...done.
        com_zimbra_tooltip...done.
        com_zimbra_url...done.
        com_zimbra_viewmail...done.
        com_zimbra_webex...done.
        com_zimbra_ymemoticons...done.
        com_zextras_drive_open...done.
        com_zextras_chat_open...done.
Finished installing common zimlets.
Restarting mailboxd...done.
Creating galsync account for default domain...done.

You have the option of notifying Zimbra of your installation.
This helps us to track the uptake of the Zimbra Collaboration Server.
The only information that will be transmitted is:
        The VERSION of zcs installed (8.8.12_GA_3794_RHEL7_64)
        The ADMIN EMAIL ADDRESS created (admin@example.com)

Notify Zimbra of your installation? [Yes] No
Notifying Zimbra of installation via http://www.zimbra.com/cgi-bin/notify.cgi?VER=8.8.12_GA_3794_RHEL7_64&MAIL=admin@example.com

ERROR: Notification failed
Checking if the NG started running...done.
Setting up zimbra crontab...done.


Moving /tmp/zmsetup.20190817-132218.log to /opt/zimbra/log


Configuration complete - press return to exit

You have successfully learned to install Zimbra on CentOS 7.

Post Installation Configurations

Zimbra Collaboration Suite creates an operating system user zimbra with disabled password. Zimbra Collaborative Suite connects with this user using ssh keys. Therefore, we need to configure ssh keys as follows.

# sudo -u zimbra -i
$ zmupdateauthkeys
Updating keys for zimbra-01.example.com
Fetching key for zimbra-01.example.com
Updating keys for zimbra-01.example.com
Updating /opt/zimbra/.ssh/authorized_keys

In order to display server statistics on Administration console, the syslog configuration files must be modified as follows.

Connect as root user and execute following command.

# /opt/zimbra/libexec/zmsyslogsetup
updateSyslog: Updating /etc/rsyslog.conf...done.

Enabling automatic scanning of email attachments using ClamAV antivirus.

# su - zimbra
$ zmprov mcf zimbraAttachmentsScanURL clam://localhost:3310/
$ zmprov mcf zimbraAttachmentsScanEnabled TRUE

Allow Zimbra Admin Panel’s service ports in Linux firewall.

# firewall-cmd --permanent --add-port=7071/tcp
success
# firewall-cmd --reload
success

Open URL https://zimbra-01.example.com:7071/ in a web browser.

Note: Browser displays a warning due to self signed SSL certificate, you must ignore it to continue or you can get your SSL Certificate digitally signed by a CA (Certificate Authority) in your network.

Login with Admin user credentials.

You are now at the dashboard of Zimbra admin panel, many options are available here. You can explore it by your own. We are now adding an email account here.

Click on Add Account.

Add information about Email User Account and click on Finish.

Again at the dashboard of Zimbra admin console, Click on Logout.

Allow Zimbra Web mail service port in Linux firewall.

# firewall-cmd --permanent --add-service=https
success
# firewall-cmd --reload
success

Open URL https://zimbra-01.example.com using a client’s browser.

Login using newly created email user.

We have been login as ahmer user.

Configure Linux Firewall:

Similarly, we can configure desktop based email clients like Outlook, Thunderbird, etc. for our users. But, before doing that, we required to allow relevant services in our CentOS 7 server’s firewall.

# firewall-cmd --permanent --add-service={pop3,pop3s,imap,imaps,smtp,smtps}
success
# firewall-cmd --reload
success

Similarly, to configure a XMPP chat client, we have to allow XMPP service port in Linux firewall.

# firewall-cmd --add-service=xmpp-client
success
# firewall-cmd --reload
success

We have successfully installed Zimbra Collaboration Suite to configure a mail and chat server on CentOS 7.

If you are new to Linux and facing difficulty in working at Linux Bash prompt. We recommend that, you should read The Linux Command Line, 2nd Edition: A Complete Introduction by William Shotts.

Final Thoughts

Thank you for following this guide on how to install Zimbra on CentOS 7. If you need further assistance or prefer a professional to handle the installation, I offer expert services on Fiverr. Visit my Fiverr profile to hire me for a seamless and efficient Zimbra setup. Let me help you get your email and collaboration platform up and running smoothly!