Preparing to unpack .../psad_2.4.3-1_amd64.deb ...
Unpacking psad (2.4.3-1) ...
Processing triggers for ureadahead (0.100.0-19) ...
ureadahead will be reprofiled on next reboot
Setting up psad (2.4.3-1) ...
Job for psad.service failed because the control process exited with error code.
See "systemctl status psad.service" and "journalctl -xe" for details.
invoke-rc.d: initscript psad, action "start" failed.
● psad.service - LSB: Port Scan Attack Detector (psad)
   Loaded: loaded (/etc/init.d/psad; generated; vendor preset: enabled)
   Active: failed (Result: exit-code) since Wed 2017-05-10 11:42:31 BST; 4ms ago
     Docs: man:systemd-sysv-generator(8)
  Process: 9954 ExecStart=/etc/init.d/psad start (code=exited, status=1/FAILURE)

May 10 11:42:30 Akihito systemd[1]: Starting LSB: Port Scan Attack Detector (psad)...
May 10 11:42:31 Akihito psad[9954]: [*] The config file "/etc/psad/psad.conf" does not contain the
May 10 11:42:31 Akihito psad[9954]: variable: "EMAIL_ADDRESSES".  Exiting! at /usr/sbin/psad line 10873.
May 10 11:42:31 Akihito psad[9954]:  * Unable to start the daemon
May 10 11:42:31 Akihito psad[9954]:  * Starting Port Scan Attack Detector psad
May 10 11:42:31 Akihito psad[9954]:    ...fail!
May 10 11:42:31 Akihito systemd[1]: psad.service: Control process exited, code=exited status=1
May 10 11:42:31 Akihito systemd[1]: Failed to start LSB: Port Scan Attack Detector (psad).
May 10 11:42:31 Akihito systemd[1]: psad.service: Unit entered failed state.
May 10 11:42:31 Akihito systemd[1]: psad.service: Failed with result 'exit-code'.
dpkg: error processing package psad (--configure):
 subprocess installed post-installation script returned error exit status 1