Mailgraph gathers statistics about traffic passing through a Postfix
mail server and presents them in graphical form on a web page. It does
this using the excellent RRDTOOL
(http://people.ee.ethz.ch/~oetiker/webtools/rrdtool/).

This Debian package installs itself, optionally, as a daemon that
will constantly gather the statistics it needs. You really need to turn
this option on for it to be of any use. The statistics themselves are
served up by a web CGI program, /usr/lib/cgi-bin/mailgraph.cgi. With any
normal Debian web server install, this should be accessible as
http://localhost/cgi-bin/mailgraph.cgi

Note for Lighttpd users:
Lighttpd doesn't take *.cgi? values, hence the graphs are not displayed 
without extra configuration.
An example of such configuration is available in
/usr/share/doc/mailgraph/examples/lighttpd.conf
It should be amended to suit your needs, and copied to eg.
/etc/lighttpd/conf-available/50-mailgraph.conf

 -- Norbert Tretkowski <nobse@debian.org>  Thu, 25 Dec 2003 23:50:13 +0100
 -- Julien Valroff <julien@kirya.net>  Fri, 13 Aug 2010 08:50:13 +0200