1. wget http://www.configserver.com/free/cmm.tgz
2. Untar the distribution:
tar -xzf cmm.tgz
3. cd into the directory created and run the install script:
cd cmm/
sh install.sh
4. Login to WHM and scroll to the bottom of the left hand menu and you should see “ConfigServer Mail Manage”
If you want to uninstall, simply:
rm -fv /usr/local/cpanel/whostmgr/docroot/cgi/addon_cmm.cgi
rm -fv /usr/local/cpanel/whostmgr/docroot/cgi/cmmversion.txt
rm -Rfv /usr/local/cpanel/whostmgr/docroot/cgi/cmm/