Linux Apps Tutorials - Herong's Tutorial Examples - v1.03, by Herong Yang
SquirrelMail Webmail Installation on CentOS
This section provides a tutorial example on how to install SquirrelMail on CentOS computers as a Web-based email client tool.
What Is SquirrelMail? SquirrelMail is a free open source Web-based email client tool for Linux systems that integrates to Postfix and Dovecot local servers. It includes built-in pure PHP support for IMAP and SMTP, and renders all pages in pure HTML 4.0 for maximum compatibility across browsers. It has strong MIME support and a flexible plugin system.
The latest stable version is SquirrelMail 1.4.22, which seems to be outdated (released in 2011). So I decided to try the "stable version snapshot" version, SquirrelMail 1.4.23-svn, released in 2020.
1. Go to SquirrelMail Website at http://squirrelmail.org.
2. Click "Download" from the left menu. You see the download page.
3. Click "squirrelmail-20201119_0200-SVN.stable.tar.gz" to download it.
4. Unzip and un-tar the download file. You see the ./squirrelmail.stable/squirrelmail sub-directory.
5. Install SquirrelMail on the web server. Remember to backup the old Webmail HTML directory, if exists.
herong$ sudo mv /var/www/html/mail /var/www/html/mail-old herong$ sudo mv ./squirrelmail.stable/squirrelmail /var/www/html/mail
6. Fix ownership and security context.
herong$ cd /var/www/html herong$ sudo chown -R root mail herong$ sudo chgrp -R root mail herong$ sudo chcon -R -t httpd_sys_content_t mail
7. Test installation by open http://192.168.1.100/mail/doc/ in a Web browser. You see SquirrelMail documentations. Read the "INSTALL - Installation instructions" page.
Table of Contents
Running Apache HTTP Server (httpd) on Linux Systems
Running Apache Tomcat on Linux Systems
Running PHP Scripts on Linux Systems
Running MySQL Database Server on Linux Systems
Running Python Scripts on Linux Systems
Conda - Environment and Package Manager
Graphics Environments on Linux
►SquirrelMail - Webmail in PHP
►SquirrelMail Webmail Installation on CentOS
SquirrelMail Configuration on CentOS
SquirrelMail for Mail Server on Local Network
SquirrelMail Configuration for IMAPS Port 993
Provide Self Signed Certificate to SquirrelMail
SquirrelMail Configuration for SMTPS Port 465