from time to time (no idea, what is the cause) many warnings are output stating a problem with one line in FuzzyOcr?.pm
/var/log/warn
Dec 27 09:37:41 mail5 spamd[7541]: Argument "/tmp/.spamassassin7541QKDwn2tmp/DSC01043.JPG.pnm:" isn't numeric in sprintf at /etc/mail/spamassassin/FuzzyOcr.pm line 617.
Dec 27 09:37:41 mail5 spamd[7541]: Argument "PPM" isn't numeric in sprintf at /etc/mail/spamassassin/FuzzyOcr.pm line 617.
Dec 27 09:37:41 mail5 spamd[7541]: Argument "raw," isn't numeric in sprintf at /etc/mail/spamassassin/FuzzyOcr.pm line 617.
Dec 27 09:37:41 mail5 spamd[7541]: Argument "by" isn't numeric in sprintf at /etc/mail/spamassassin/FuzzyOcr.pm line 617.
Dec 27 09:38:16 mail5 spamd[8934]: Argument "/tmp/.spamassassin89343zrA9ctmp/DSC01043.JPG.pnm:" isn't numeric in sprintf at /etc/mail/spamassassin/FuzzyOcr.pm line 617.
Dec 27 09:38:16 mail5 spamd[8934]: Argument "PPM" isn't numeric in sprintf at /etc/mail/spamassassin/FuzzyOcr.pm line 617.
Dec 27 09:38:16 mail5 spamd[8934]: Argument "raw," isn't numeric in sprintf at /etc/mail/spamassassin/FuzzyOcr.pm line 617.
Dec 27 09:38:16 mail5 spamd[8934]: Argument "by" isn't numeric in sprintf at /etc/mail/spamassassin/FuzzyOcr.pm line 617.
Dec 27 09:38:59 mail5 spamd[8934]: Argument "/tmp/.spamassassin89343zrA9ctmp/DSC01044.JPG.pnm:" isn't numeric in sprintf at /etc/mail/spamassassin/FuzzyOcr.pm line 617.
Dec 27 09:38:59 mail5 spamd[8934]: Argument "PPM" isn't numeric in sprintf at /etc/mail/spamassassin/FuzzyOcr.pm line 617.
Dec 27 09:38:59 mail5 spamd[8934]: Argument "raw," isn't numeric in sprintf at /etc/mail/spamassassin/FuzzyOcr.pm line 617.
Dec 27 09:38:59 mail5 spamd[8934]: Argument "by" isn't numeric in sprintf at /etc/mail/spamassassin/FuzzyOcr.pm line 617.
Dec 27 09:39:33 mail5 spamd[8934]: Argument "/tmp/.spamassassin89343zrA9ctmp/DSC01042.JPG.pnm:" isn't numeric in sprintf at /etc/mail/spamassassin/FuzzyOcr.pm line 617.
Dec 27 09:39:33 mail5 spamd[8934]: Argument "PPM" isn't numeric in sprintf at /etc/mail/spamassassin/FuzzyOcr.pm line 617.
Dec 27 09:39:33 mail5 spamd[8934]: Argument "raw," isn't numeric in sprintf at /etc/mail/spamassassin/FuzzyOcr.pm line 617.
Dec 27 09:39:33 mail5 spamd[8934]: Argument "by" isn't numeric in sprintf at /etc/mail/spamassassin/FuzzyOcr.pm line 617.
The same time the process list of the system is filling up by gocr processes.
The only way to free the system again is to kill manually the gocr processes.
/etc/mail/spamassassin/FuzzyOcr.cf
#loadplugin FuzzyOcr FuzzyOcr.pm
body FUZZY_OCR eval:fuzzyocr_check()
describe FUZZY_OCR Mail contains an image with common spam text inside
body FUZZY_OCR_WRONG_CTYPE eval:dummy_check()
describe FUZZY_OCR_WRONG_CTYPE Mail contains an image with wrong content-type set
body FUZZY_OCR_CORRUPT_IMG eval:dummy_check()
describe FUZZY_OCR_CORRUPT_IMG Mail contains a corrupted image
body FUZZY_OCR_KNOWN_HASH eval:dummy_check()
describe FUZZY_OCR_KNOWN_HASH Mail contains an image with known hash
priority FUZZY_OCR 900
########### Plugin Configuration #############
#### Logging options #####
# Verbosity level (see manual) Attention: Don't set to 0, but to 0.0 for quiet operation, or comment out the focr_logfile line. (Default value: 1)
focr_verbose 2
# Logfile (make sure it is writable by the plugin) (Default value: NONE)
focr_logfile /var/log/FuzzyOcr.log
##### Wordlists #####
# Here we defined the words to scan for (Default value: /etc/mail/spamassassin/FuzzyOcr.words)
#focr_global_wordlist /etc/mail/spamassassin/FuzzyOcr.words
#
# This is the path RELATIVE to the respektive home directory for the personalized list
# This list is merged with the global word list on execution (Default value: .spamassassin/fuzzyocr.words)
# If focr_personal_wordlist begins with '/', treats option as fixed path and does not search HOME
#focr_personal_wordlist .spamassassin/fuzzyocr.words
#####################
# These parameters can be used to change other detection settings
# If you leave these commented out, the defaults will be used.
# Do not use " " around any parameters!
#
##### Location of helper applications (path + binary) (Default values: /usr/bin/<app>) #####
focr_bin_gifsicle /usr/local/bin/gifsicle
#focr_bin_giffix /usr/bin/giffix
#focr_bin_giftext /usr/bin/giftext
#focr_bin_gifinter /usr/bin/gifinter
#focr_bin_giftopnm /usr/bin/giftopnm
#focr_bin_jpegtopnm /usr/bin/jpegtopnm
#focr_bin_pngtopnm /usr/bin/pngtopnm
#focr_bin_bmptopnm /usr/bin/bmptopnm
#focr_bin_tifftopnm /usr/bin/tifftopnm
#focr_bin_ppmhist /usr/bin/ppmhist
focr_bin_gocr /usr/local/bin/gocr
#focr_bin_ocrad /usr/bin/ocrad
#
#focr_path_bin /usr/local/netpbm/bin:/usr/local/bin:/usr/bin
#
############################################################################################
##### Scansets, comma seperated (Default value: $gocr -i -, $gocr -l 180 -d 2 -i -) #####
# Each scanset consists of one or more commands which make text out of pnm input.
# Each scanset is run seperately on the PNM data, results are combined in scoring.
#focr_scansets $gocr -i $pfile, $gocr -l 180 -d 2 -i $pfile
#
# An example that involves ocrad as well
#focr_scansets $gocr -i $pfile, $gocr -l 180 -d 2 -i $pfile, $ocrad -s 0.5 -T 0.5 $pfile
#
# Another one for ocrad only
#focr_scansets $ocrad -s 0.5 -T 0.5 $pfile
#
# To use only one scan with default values, uncomment the next line instead
#focr_scansets $gocr -i $pfile
#
# Some example for more advanced sets
# Thisone uses the first the standard scan, then a scanset which first reduces the image to 3 colors and then scans it with custom settings
# and then it scans again only with these custom settings
# NOTE: This is for advanced users only, if you have questions how to use this, ask on the ML or on IRC, most times you wont need this at all
#focr_scansets $gocr -i $pfile, pnmnorm $pfile 2>$efile | pnmquant 3 2>>$efile | pnmnorm 2>>$efile | $gocr -l 180 -d 2 -i -, $gocr -l 180 -d 2 -i $pfile
#########################################################################################
##### Various Score/Scan settings #####
# Timeout for the plugin, in seconds. (Maximum runtime of the plugin) (Default value: 10)
#focr_timeout 15
#
# Default detection treshold (see manual) (Default value: 0.3) (Can be changed on a per word basis in the wordlist).
#focr_threshold 0.3
#
# This is the score for a hit after focr_counts_required matches
#focr_base_score 5
#
# This is the additional score for every additional match after focr_counts_required matches (Default value: 1)
#focr_add_score 0.375
#
# This is the score to give for a wrong content-type (e.g. JPEG image but content type says GIF) (Default value: 1.5)
#focr_wrongctype_score 1.5
#
# This is the score to give for a corrupted image (This currently affects only GIF images) (Default value: 2.5)
#focr_corrupt_score 2.5
#
# This is the score to give for a corrupted unfixable image (This currently affects only GIF images) (Default value: 5)
#focr_corrupt_unfixable_score 5
#
# This is used to disable the OCR engine if the message has already more points than this value (Default value: 10)
focr_autodisable_score 99
#
# Number of minimum matches before the rule scores (Default value: 2)
#focr_counts_required 3
#
#######################################
##### Image Hash Database settings (Recommended, but disabled by default) #####
#
# Set this to 2 to enable the Image Hash database feature (Default value: 0.0)
# Value = 1 ... use digest_hash only
# Value = 2 ... use digest_db w/digest_hash import (Recommended)
focr_enable_image_hashing 2
#
# The score is saved with the hash in the database, so no extra scoring for a db hit is required.
#
# If the image hash database feature is enabled, specify the file here to use as database
# (Default value: /etc/mail/spamassassin/FuzzyOcr.hashdb)
#focr_digest_db /etc/mail/spamassassin/FuzzyOcr.hashdb
#
# If the image hash db feature is enabled, specify the file here to use as database
# (Default value: /etc/mail/spamassassin/FuzzyOcr.db)
#focr_db_hash /etc/mail/spamassassin/FuzzyOcr.db
#
# If the image hash db feature is enabled, specify the file here to use as database
# (Default value: /etc/mail/spamassassin/FuzzyOcr.safe.db)
#focr_db_safe /etc/mail/spamassassin/FuzzyOcr.safe.db
#
# Expire records from focr_digest_db after (Default: 35) days
#focr_db_max_days 15
#
# Automatically add hashes of spam images recognized by OCR to the Image Hash database, to disable, set to 0.0 (Default value: 1)
#focr_hashing_learn_scanned 1
#
# Keep files that generate errors (Default: 0.0)
# 0 = always cleanup
# 1 = keep only if error
# 2 = always keep
#focr_keep_bad_images 0.0
#
# Score images who's global word count is below focr_counts_required using focr_add_score * word count as score.
focr_score_ham -0.5
######################################################################
mail5:/var/log #
