I am trying to install mailscanner using apt-get install mailscanner and I got the following error

Setting up spamassassin (3.3.1-1) ...
Starting SpamAssassin Mail Filter Daemon: child process [21344] exited or timed out without signaling production of a PID file: exit 255 at /usr/sbin/spamd line 2588.
invoke-rc.d: initscript spamassassin, action "start" failed.
dpkg: error processing spamassassin (--configure):
 subprocess installed post-installation script returned error exit status 255
dpkg: dependency problems prevent configuration of mailscanner:
 mailscanner depends on spamassassin (>= 3.1); however:
  Package spamassassin is not configured yet.
dpkg: error processing mailscanner (--configure):
 dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
                                                                                                          Errors were encountered while processing:
 spamassassin
 mailscanner
E: Sub-process /usr/bin/dpkg returned an error code (1)

and when I tried to install spamassassin I got the following error :

Setting up spamassassin (3.3.1-1) ...
Starting SpamAssassin Mail Filter Daemon: child process [21389] exited or timed out without signaling production of a PID file: exit 255 at /usr/sbin/spamd line 2588.
invoke-rc.d: initscript spamassassin, action "start" failed.
dpkg: error processing spamassassin (--configure):
 subprocess installed post-installation script returned error exit status 255
dpkg: dependency problems prevent configuration of mailscanner:
 mailscanner depends on spamassassin (>= 3.1); however:
  Package spamassassin is not configured yet.
dpkg: error processing mailscanner (--configure):
 dependency problems - leaving unconfigured
No apport report written because the error message indicates its a followup error from a previous failure.
                                                                                                          Errors were encountered while processing:
 spamassassin
 mailscanner
E: Sub-process /usr/bin/dpkg returned an error code (1)

I am using Ubuntu Server 10.04