Stop exim daemon when removing excess processes

src/freedombone-base-email

     { echo '#!/bin/bash';
       echo "exim_ctr=\$(pgrep \"exim4\" | wc -l)";
       echo "if [ \"\$exim_ctr\" -gt 5 ]; then";
-      echo '    exim -bp | exiqgrep -i | xargs exim -Mrm';
+      echo '    systemctl stop exim4';
+      echo '    exim -bp | exiqgrep -i | xargs exim -Mrm 2> /dev/null';
+      echo '    systemctl start exim4';
       echo 'fi'; } > /usr/bin/exim_check
     chmod +x /usr/bin/exim_check
     cron_add_mins 5 '/usr/bin/exim_check'