In this tutorial, we are going to provide you with step-by-step instructions on how to install Citadel on CentOS 7. The Citadel messaging and collaboration platform is open source software. Citadel has many useful features such as managing e-mail messages, calendars, scheduling, instant messaging, and other collaboration tools. A complete list of features is available here…
This installation guide assumes you already have a CentOS 7 web server installed and configured on a virtual server. At the time of this writing, the latest stable release is Citadel 9.01.
Update your operating system and then install ‘Development Tools’ using the following commands:
yum clean all yum update yum groupinstall "Development Tools"
‘Development Tools’ is the yum group, which is a predefined software package (GCC, C / C ++ compilers, make, etc.) that can be installed on your virtual server right away instead of installing each application separately … Development tools are mainly used to enable building and compiling custom software from source, etc.
In order to complete the installation successfully, Citadel requires some additional packages such as WebCit front end, Berkeley DB, libical, libSieve, etc., so run the following command to install them:
yum install gettext openssl-devel shared-mime-info which
Start the installation process:
cd /opt/ /usr/bin/wget -q -O - http://easyinstall.citadel.org/install | sh
The Citadel installation will automatically download and install all required dependencies. Once this process is complete, follow the simple steps:
enter the name and password of the administrator user account set user ID to 'citadel' enter '0.0.0.0' as IP address which the server should be listening to set the TCP port number to '504' choose 'internal' as user authentication mode set WebCit to automatically start on boot set the locale WebCit should use (e.g. en_US) set WebCit to listen on port 2000 for HTTP requests set WebCit to listen on port 2443 for HTTPS requests
yum install spamassassin
Edit the configuration file ‘local.cf’ and set SpamAssassin to include in the subject of spam emails:
rewrite_header Subject [SPAM]
Enable SpamAssassin to start automatically at system boot and start the SpamAssassin service:
systemctl enable spamassassin systemctl start spamassassin
Update SpamAssassin rules with the following command:
ClamAV is available on the EPEL repository, so install the EPEL package with the following command:
yum install epel-release
Install ClamAV, configure it and update the virus definitions:
yum install clamav clamav-update sed -i -e "s/^Example/#Example/" /etc/freshclam.conf freshclam
All. Installation of the Citadel is complete.
Open https://yourdomain.com:2443 using your web browser, log in using the newly created login user account by the administrator and proceed with Citadel setup:
Go to ‘Administration’ >> ‘Domain names and Internet mail configuration’ >> ‘SpamAssassin hosts’ and enter “127.0.0.1” as the IP address of your SpamAssassin server. on the same page, enter ‘127.0.0.1’ in the ‘ClamAV server clamd hosts’ field as the IP address of the ClamAV server.