Method 1: Building a Custom CentOS 8 RPM from Source (Recommended)
Because the pre-built noarch.rpm was phased out of the standard EPEL 8 ecosystem, administrators must use strategic workarounds to deploy it. This guide outlines how to download, build, and configure a working SquirrelMail RPM environment on CentOS 8. The Reality of SquirrelMail on CentOS 8 download squirrelmail rpm for centos 8
Historically, administrators could execute yum install squirrelmail after activating the Extra Packages for Enterprise Linux (EPEL) repository. While this remains true for older platforms like CentOS 7, the package maintainers dropped it from the newer EPEL 8 release cycle. Method 1: Building a Custom CentOS 8 RPM