[Unit] Description=Exim Mail Transport Agent After=network.target Conflicts=sendmail.service postfix.service [Service] PrivateTmp=true # added automatically, for details please see # https://en.opensuse.org/openSUSE:Security_Features#Systemd_hardening_effort ProtectSystem=full # exim needs to access ~/.forward and MDA-files to for local delivery # ProtectHome=true PrivateDevices=true ProtectHostname=true ProtectClock=true ProtectKernelTunables=true ProtectKernelModules=true ProtectKernelLogs=true ProtectControlGroups=true RestrictRealtime=true # end of automatic additions Environment=QUEUE=1h EnvironmentFile=-/etc/sysconfig/exim ExecStart=/usr/sbin/exim $EXIM_ARGS [Install] WantedBy=multi-user.target