"This article describes how you can monitor your Postfix
mailserver with the tools Mailgraph and pflogsumm. Mailgraph
creates daily, weekly, monthly, and yearly graphs of sent,
received, bounced, and rejected emails and also of spam and
viruses, if SpamAssassin and ClamAV are integrated into Postfix
(e.g., using amavisd-new). These graphs can be accessed with a
browser, whereas pflogsumm ('Postfix Log Entry Summarizer') can be
used to send reports of Postfix activity per email.
"In the following I will describe how to install and configure
Mailgraph and pflogsumm on Debian Etch..."