On Fri, 1 May 2009, vibi wrote:

> From: vibi <ml...@go2.pl>
> To: users@spamassassin.apache.org
> Date: Fri, 1 May 2009 02:56:34 -0700 (PDT)
> Subject: spamassassin block *.png
>
> How to use spamassassin block *.png so that going to the quarantine?
> 100% of spam that gets to me a plain e-mail with attachment *.png

One poossible tool to help reduce this is the FuzzyOcr plugin:

http://fuzzyocr.own-hero.net/

You'll need other graphics software used by the above plugin.

For example, a message I receive a couple of days ago scored:

X-Spam-Report: 1.0/6.0
        ---- Start SpamAssassin results 
        *  1.0 DC_IMG_TEXT_RATIO BODY: Low body to pixel area ratio
        ---- End SpamAssassin results

With the addition of the FuzzyOcr plugin it scored:

X-Spam-Status: Yes, score=12.1 required=6.0 tests=FUZZY_OCR,RDNS_NONE
        autolearn=disabled version=3.2.5
X-Spam-Report: 
        *  0.1 RDNS_NONE Delivered to trusted network by a host with no rDNS
        *   12 FUZZY_OCR BODY: Mail contains an image with common spam text insi
de
        *      [Words found:]
        ["viagra" in 5 lines]
        ["profit" in 1 lines]
        [(9 word occurrences found)]
-- 
Dennis Davis, BUCS, University of Bath, Bath, BA2 7AY, UK
d.h.da...@bath.ac.uk               Phone: +44 1225 386101

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