Spam inside images
mike at vesol.com
Tue Nov 21 15:52:33 GMT 2006
> -----Original Message-----
> From: mailscanner-bounces at lists.mailscanner.info
> [mailto:mailscanner-bounces at lists.mailscanner.info] On Behalf
> Of Erik van der Leun
> Sent: Tuesday, November 21, 2006 9:12 AM
> To: MailScanner discussion
> Subject: Re: Spam inside images
> Gerhard Mourani wrote:
> > Hello list,
> > I would like to know if someone know how to make MailScanner scan
> > inside images for spam. I receive lot of this kind of new spam now.
> > There are inside the image and cannot be detected by
> spamassasin which
> > check for texts only.
> > Gerhard,
> 1. cd to /etc/mail/spamassassin
> 2. download the patch file from:
> 3. type 'patch < patch-ocrtext'
> This will create two files in your current directory called
> ocrtext.cf and ocrtext.pm
> 4. Edit v310.pre and add the following lines:
> # OCR - performs Optical Character Recognition on spam images
> loadplugin ocrtext /etc/mail/spamassassin/ocrtext.pm
> loadplugin Mail::SpamAssassin::Timeout
> 5. Edit the ocrtext.cr file and change the following settings:
> ## This points to your gocr binary not just the path. Try
> 'which gocr'.
> gocr_path /usr/local/bin/gocr
> ## This is JUST the path to your pnm binarys ( i.e.
> pngtopnm, giftopnm,
> jpegtopnm )
> pnmtools_path /usr/bin
> 6. Run spamassassin -D --lint and check for errors.
> If all went well restart spamassassin or force it to
> reread it's config
> however you would on your system.
> Then try typing something like 'tail -f /var/log/mail.log | grep
> SPAMPIC_ALPHA', on a high volume server you should see some rules
> matching after a few minutes. If so then you are OCR'ing
> the images!
I followed these instructions and can't get around:
(Can't locate object method "ocrtext_eval" via package
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