# Install EPEL rpm -Uhv http://url/to/epel-release.rpm # Install the Kolab Groupware repository configuration cd /etc/yum.repos.d/ wget http://obs.kolabsys.com:82/Kolab:/3.2/CentOS_6/Kolab:3.2.repo wget http://obs.kolabsys.com:82/Kolab:/3.2:/Updates/CentOS_6/Kolab:3.2:Updates.repo