monsterjam:/etc/letsencrypt/archive/monsterjam # yum --enablerepo=extras install centos-release-SCL Loaded plugins: fastestmirror, remove-with-leaves Setting up Install Process Loading mirror speeds from cached hostfile * base: mirror.dattobackup.com * epel: mirror.us.leaseweb.net * extras: distro.ibiblio.org * updates: mirror.netdepot.com No package centos-release-SCL available. Error: Nothing to do monsterjam.org:/etc/letsencrypt/archive/monsterjam # cat /etc/centos-release CentOS release 6.7 (Final) monsterjam:/etc/letsencrypt/archive/monsterjam # any ideas?