====== Spamassassin + FuzzyOCR (not really a debian way) ======

**What do we need:**
  * Debian Sarge
  * Spamassassin (CPAN up-to-date)
  * FuzzyOCR
  * luck :)

===== Getting started =====

upgrade your ''Spamassassin'' (non debian / CPAN way)

   perl -MCPAN -e shell
   cpan> install Mail:Spamassassin

//keep your finger crossed//

get some graphic manipulation packages from debian-sarge-backports

   # apt-get install -t sarge-backports install gocr libungif-bin \
     libimage-exif-perl libimage-exiftool-perl libstring-approx-perl imagemagick netpbm

===== The Fuzzy magic =====

   # cd /usr/src/
   # wget http://users.own-hero.net/~decoder/fuzzyocr/fuzzyocr-2.3b.tar.gz
   # tar xzvf fuzzyocr-2.3b.tar.gz
   # wget http://www200.pair.com/mecham/spam/fuzzyocr-23b-hashdb-poison.patch
   # cd FuzzyOcr-2.3b
   # patch FuzzyOcr.pm < ../fuzzyocr-23b-hashdb-poison.patch
   # cp FuzzyOcr.pm /usr/share/perl5/Mail/SpamAssassin/Plugin/
   # cp FuzzyOcr.cf /etc/spamassassin/
   # cp FuzzyOcr.words.sample /etc/spamassassin/FuzzyOcr.words

===== Configuration =====

   # echo "loadplugin FuzzyOcr /usr/share/perl5/Mail/SpamAssassin/Plugin/FuzzyOcr.pm"\
     >> /etc/spamassassin/v310.pre
   # sed -i "s/^loadplugin FuzzyOcr FuzzyOcr.pm/#loadplugin FuzzyOcr FuzzyOcr.pm/"\
     /etc/spamassassin/FuzzyOcr.cf
   # sed -i "s/^#focr_base_score\ 4/focr_base_score\ 2/" /etc/spamassassin/FuzzyOcr.cf
    
**For SpamAssassin less than 3.1.4:**

    # sed -i "s/^focr_pre314 0.0/focr_pre314 1.0/" /etc/spamassassin/FuzzyOcr.cf

===== Fingers still crossed =====

Verify Spamassassin config:

    # spamassassin --lint


See also: [[http://www200.pair.com/mecham/spam/image_spam.html|Fighting image spam on our Debian spamfilter with FuzzyOcr and ImageInfo plugins]]