====== Spamschutz ======
  - <code bash>aptitude install spamassassin spamc razor pyzor
groupadd -g 501 spamd
useradd -u 501 -g 501 -s /sbin/nologin -d /home/spamd spamd
</code>
  - /etc/default/spamassassin: <file># /etc/default/spamassassin
# Duncan Findlay

# WARNING: please read README.spamd before using.
# There may be security risks.

# Change to one to enable spamd
ENABLED=1

# Options
# See man spamd for possible options. The -d option is automatically added.

# SpamAssassin uses a preforking model, so be careful! You need to
# make sure --max-children is not set to anything higher than 5,
# unless you know what you're doing.

OPTIONS="--create-prefs --max-children 5 --username spamd --helper-home-dir"

# Pid file
# Where should spamd write its PID to file? If you use the -u or
# --username option above, this needs to be writable by that user.
# Otherwise, the init script will not be able to shut spamd down.
PIDFILE="/var/run/spamd.pid"

# Set nice level of spamd
NICE="--nicelevel 15"

# Cronjob
# Set to anything but 0 to enable the cron job to automatically update
# spamassassin's rules on a nightly basis
CRON=0</file>
  - /etc/spamassassin/local.cf: <file>...
#pyzor
use_pyzor 1
pyzor_path /usr/bin/pyzor

#razor
use_razor2 1
razor_config /etc/razor/razor-agent.conf

#bayes
use_bayes 1
use_bayes_rules 1
bayes_auto_learn 1
...</file>
  - /etc/postfix/master.cf: <file>...
smtp      inet  n       -       -       -       -       smtpd
   -o content_filter=spamassassin
...
spamassassin unix - n n - - pipe
  user=spamd argv=/usr/bin/spamc -f -e /usr/sbin/sendmail -oi -f ${sender} ${recipient}
 </file>
  - <code bash>/etc/init.d/spamassassin start</code>