-# Set up mail client system.
-apt-get -y install getmail4 procmail mutt
-su plom -c 'mkdir -p /home/plom/mail'
+# Set up mail system.
+DEBIAN_FRONTEND=noninteractive apt-get -y install getmail4 procmail mutt postfix maildrop
+cp config/systemfiles/main.cf /etc/postfix/main.cf
+su plom -c 'mkdir -p /home/plom/mail/'