root@m:~# cat /usr/share/doc/spamc/sample-spam.txt|spamc -R
1000.0/5.0
-0.0 NO_RELAYS              Informational: message was not relayed via SMTP
1000 GTUBE                  BODY: Generic Test for Unsolicited Bulk Email
-0.0 NO_RECEIVED            Informational: message has no Received headers