Installation SpamAssassin

Bonjour je cherche désesperement à installer SpamAssassin sur mon serveur mail fonctionnement avec Postfix et lorsque je souhaite le tester sur un Spam voilà le résultat :
mail:/private/var/spool/imap/user/chp/spam root# spamassassin -tD > mail_test
[28640] dbg: logger: adding facilities: all
[28640] dbg: logger: logging level is DBG
[28640] dbg: generic: SpamAssassin version 3.1.5
[28640] dbg: config: score set 0 chosen.
[28640] dbg: util: running in taint mode? yes
[28640] dbg: util: taint mode: deleting unsafe environment variables, resetting PATH
[28640] dbg: util: PATH included '/bin', keeping
[28640] dbg: util: PATH included '/sbin', keeping
[28640] dbg: util: PATH included '/usr/bin', keeping
[28640] dbg: util: PATH included '/usr/sbin', keeping
[28640] dbg: util: PATH included '/usr/local/bin', keeping
[28640] dbg: util: PATH included '/usr/local/sbin', keeping
[28640] dbg: util: final PATH set to: /bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin:/usr/local/sbin
[28640] dbg: message: ---- MIME PARSER START ----
[28640] dbg: message: main message type: text/plain
[28640] dbg: message: parsing normal part
[28640] dbg: message: added part, type: text/plain
[28640] dbg: message: ---- MIME PARSER END ----
[28640] dbg: dns: is Net::DNS::Resolver available? yes
[28640] dbg: dns: Net::DNS version: 0.58

et aprés il ne fait plus rien et ne me réaffiche pas le prompt ...
Merci de votre aide.