Check your /etc/default/spamassassin. It should look like this:

# /etc/default/spamassassin
# Duncan Findlay
# WARNING: please read README.spamd before using.
# There may be security risks.
# Change to one to enable spamd
ENABLED=0
# 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 2 --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"

Next we configure the DHCP server.

Edit /etc/dhcp3/dhcpd.conf. Mine now looks like this:

# Local Network
subnet 192.168.1.0 netmask 255.255.255.0 {
	option netbios-name-servers 192.168.1.1;
	option domain-name-servers 192.168.1.1;
	option domain-name "your.domain.here";
	option broadcast-address 192.168.1.255;
	option routers 192.168.1.1;
	range 192.168.1.100 192.168.1.130;
	}

Edit /etc/default/dhcp3-server. It should read

INTERFACES=eth1

/etc/init.d/dhcp3-server start

Next do:

cd /root

wget http://www.dcc-servers.net/dcc/source/dcc.tar.Z

gunzip dcc.tar.Z

tar -xvf dcc.tar

cd dcc-1.3.45     ##or whatever version is current.

./configure

make

make install