/etc/exim.conf, /etc/aliases Create the Exim configuration files with the following commands: cat >> /etc/aliases << "EOF" postmaster: root MAILER-DAEMON: root EOF exim -v -bi && /usr/sbin/exim -bd -q1m To protect an existing /etc/aliases file, we will append these aliases to it if it exists. This file should be checked and duplicate aliases removed, if present. To automate the running of exim at startup, install /etc/rc.d/init.d/exim init script included in the package. make install-exim