Hyperizon
Run the following command to see which package is not installed?
rpm -qa | grep "^postfix3"
rpm -qa | grep "^dovecot"
If postfix3 is not installed, please execute
yum install -y postfix3 postfix3-sqlite --enablerepo=gf-plus
otherwise execute
yum install -y dovecot
Please show me any errors during the installation process.