FreeBSD Install FuzzyOCR To Detect Image Spam

by on January 27, 2009 · 3 comments· LAST UPDATED December 20, 2009

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How do I install FuzzyOcr plugin for SpamAssassin to detect unsolicited bulk mail (Spam) containing images as the main content for Postfix mail server?

FuzzyOcr uses different methods to analyzes the content and properties of images to distinguish between normal mails (Ham) and spam mails. FuzzyOcr can detect many types of image spam and can protect your server and users from spammers easily.

How do Install FuzzyOCR on FreeBSD?

First, update ports tree, enter:
# portsnap fetch update
Now, install FuzzyOCR, type:
# cd /usr/ports/mail/p5-FuzzyOcr-devel
# make install clean

Copy FuzzyOcr config and words files to SpamAssassin configuration directory, type:
# cp /usr/local/share/examples/FuzzyOcr/FuzzyOcr.* /usr/local/etc/mail/spamassassin
Open /usr/local/etc/mail/spamassassin/init.pre file, enter:
# vi /usr/local/etc/mail/spamassassin/init.pre
Add following line to enable FuzzyOcr, enter:

# FuzzyOcr
loadplugin Mail::SpamAssassin::Plugin::FuzzyOcr

Open /usr/local/etc/mail/spamassassin/FuzzyOcr.cf, enter:
# vi /usr/local/etc/mail/spamassassin/FuzzyOcr.cf
Make sure you set focr_logfile to /var/log/FuzzyOcr.log, enter:
focr_logfile /var/log/FuzzyOcr.log
Save and close the file. Restart your anti spam gateway engine such as mailscanner:
# /usr/local/etc/rc.d/mailscanner restart
NOTE: If you are not using mailscanner, restart sa-spamd:
# /usr/local/etc/rc.d/sa-spamd restart

How do I test if FuzzyOCR is working or not?

Simply download test sample spam email images from the official website. Or try following commands:
# cd /tmp
# mkdir test;cd test
# fetch http://users.own-hero.net/~decoder/fuzzyocr/sample-mails.tar.gz
# tar -zxvf sample-mails.tar.gz
# spamassassin -t < ocr-gif.eml

You can also see log in /var/log/maillog and /var/log/FuzzyOcr.log files:
# tail -f /var/log/FuzzyOcr.log
# tail -f /var/log/maillog

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{ 3 comments… read them below or add one }

1 Fedora 8 apache service and any other services are unbale to access from any other (windows/linux)machine in the network. January 30, 2009 at 6:18 am

Fedora 8 apache service and any other services are unbale to access from any other (windows/linux)machine in the network. Please can anybody help me regarding.

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2 slv December 20, 2009 at 6:19 pm

hi,

nice howto! but your simple test got mistake:

# unzip sample-mails.tar.gz

really unzip? ;)

s.

Reply

3 nixCraft December 20, 2009 at 7:11 pm

Heh

Thanks for the heads up!

Reply

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