[ Thanks to Falko
Timme for this link. ]
“This tutorial describes how to scan emails for image spam with
FuzzyOCR on a Fedora 12 server. FuzzyOCR is a plugin for
SpamAssassin which is aimed at unsolicited bulk mail containing
images as the main content carrier. Using different methods, it
analyzes the content and properties of images to distinguish
between normal mails (ham) and spam mails. FuzzyOCR tries to keep
the system load low by scanning only mails that have not already
been categorized as spam by SpamAssassin, thus avoiding unnecessary
work. “