=== SpamAssassin

Sends the message through daemonized SpamAssassin (spamd), visit
http://spamassassin.apache.org[spamassassin.apache.org] for info
on configuration. The header X-Spam-Status is added to every message, this
contains the score and the threshold score for spam (usually 5.0). If the
message exceeds the threshold, the header X-Spam-Flag will be added with the
value of YES. The default host for spamd is localhost and the default port is
783.

....
 org.apache.james.spamassassin.status - Holds the status
 org.apache.james.spamassassin.flag   - Holds the flag
....

Sample Configuration:

....
<mailet notmatch="SenderHostIsLocal" class="SpamAssassin">
  <spamdHost>localhost</spamdHost>
  <spamdPort>783</spamdPort>
</mailet>
....