Fedora Core 4/5 with amavisd-new Mailgraph 1.12 mini-howto install.

Absolutely no warranty, use entirely at your own risk, read the disclaimer
at http://www200.pair.com/mecham/spam/

This assumes a recent version of amavisd-new.

Mailgraph works in the background reading the log mail log file and
updates a round robin database with some of the statistical information.

Assuming you have Apache2 (httpd) installed, enable it, and start it up:

chkconfig --level 235 httpd on
service httpd start

Make sure you can browse to the IP address (or hostname) of the server.
If not, then you may be using the iptables firewall and port 80 is not
allowing connections. You can manually add port 80 to /etc/sysconfig/iptables
by copying the --dport 25 line, and changing it to port 80, then restarting iptables.
Don't start up IP tables if you are currently not using the firewall, if it's not
configured, it may block mail and ssh. If you would like to use the firewall, you can
run lokkit (for example) to set it up. You can also run lokkit to configure it
instead of manually editing it as I do. I'm not certain but I believe that every time
you run lokkit it resets all settings back to defaults, so make sure you customize it
and add needed ports. Don't lock yourself and your mail clients out!

This example shows I copied port 25 to 80:
vi  /etc/sysconfig/iptables (only if httpd is running but you cannot browse to the http server)

-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 25 -j ACCEPT
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT

/etc/init.d/iptables restart (only if in fact you have enabled the firewall)

Make sure you can browse to the IP address (or hostname) of the server then
continue with installation. Also make sure your copy of Apache2 (package httpd)
is up to date. Adding another application on another open port does naturally
provide another entry point for hackers.

yum -y install rrdtool rrdtool-perl perl-File-Tail

cd /usr/local/src
wget http://people.ee.ethz.ch/~dws/software/mailgraph/pub/mailgraph-1.12.tar.gz
tar xvfz mailgraph-1.12.tar.gz
cd mailgraph-1.12
cp mailgraph.cgi /var/www/cgi-bin
chmod +x /var/www/cgi-bin/mailgraph.cgi
wget http://www200.pair.com/mecham/spam/mailgraph.cgi-fedora-patch.txt
patch /var/www/cgi-bin/mailgraph.cgi <mailgraph.cgi-fedora-patch.txt
cp mailgraph-init /etc/rc.d/init.d/mailgraph
chmod +x /etc/init.d/mailgraph
wget http://www200.pair.com/mecham/spam/mailgraph-init-fedora-amavis-patch.txt
patch /etc/rc.d/init.d/mailgraph <mailgraph-init-fedora-amavis-patch.txt
cp mailgraph.pl /usr/local/bin/mailgraph.pl
chmod +x /usr/local/bin/mailgraph.pl
wget http://www200.pair.com/mecham/spam/mailgraph.pl-amavis-patch.txt
patch /usr/local/bin/mailgraph.pl <mailgraph.pl-amavis-patch.txt

chkconfig --level 235 mailgraph on
/etc/init.d/mailgraph start

Send at least one message through the server.
See if these two files were created:
/var/lib/mailgraph.rrd
/var/lib/mailgraph_virus.rrd

Wait an hour or so, then browse to mailgraph.cgi on
the server. For example:

http://host.example.com/cgi-bin/mailgraph.cgi

In some cases you may need to change ownership of /var/www/cgi-bin/mailgraph.cgi
to apache:apache