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Manual Reference Pages  -  MAIL::SPAMASSASSIN::PLUGIN::TEXTCAT (3)

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Mail::SpamAssassin::Plugin::TextCat - TextCat language guesser



  loadplugin     Mail::SpamAssassin::Plugin::TextCat


This plugin will try to guess the language used in the message body text.

You can use the ok_languages directive to set which languages are considered okay for incoming mail and if the guessed language is not okay, UNWANTED_LANGUAGE_BODY is triggered.

It will always add the results to a X-Language name-value pair in the message metadata data structure. This may be useful as Bayes tokens and can also be used in rules for scoring. The results can also be added to marked-up messages using add_header, with the _LANGUAGES_ tag. See Mail::SpamAssassin::Conf for details.

Note: the language cannot always be recognized with sufficient confidence. In that case, no action is taken.


ok_languages xx [ yy zz ... ]          (default: all) This option is used to specify which languages are considered okay for incoming mail. SpamAssassin will try to detect the language used in the message body text.

Note that the language cannot always be recognized with sufficient confidence. In that case, no action is taken.

The rule UNWANTED_LANGUAGE_BODY is triggered if none of the languages detected are in the ok list. Note that this is the only effect of the ok list. It does not act as a whitelist against any other form of spam scanning.

In your configuration, you must use the two or three letter language specifier in lowercase, not the English name for the language. You may also specify all if a desired language is not listed, or if you want to allow any language. The default setting is all.


  ok_languages all         (allow all languages)
  ok_languages en          (only allow English)
  ok_languages en ja zh    (allow English, Japanese, and Chinese)

Note: if there are multiple ok_languages lines, only the last one is used.

Select the languages to allow from the list below:
af     - Afrikaans
am     - Amharic
ar     - Arabic
be     - Byelorussian
bg     - Bulgarian
bs     - Bosnian
ca     - Catalan
cs     - Czech
cy     - Welsh
da     - Danish
de     - German
el     - Greek
en     - English
eo     - Esperanto
es     - Spanish
et     - Estonian
eu     - Basque
fa     - Persian
fi     - Finnish
fr     - French
fy     - Frisian
ga     - Irish Gaelic
gd     - Scottish Gaelic
he     - Hebrew
hi     - Hindi
hr     - Croatian
hu     - Hungarian
hy     - Armenian
id     - Indonesian
is     - Icelandic
it     - Italian
ja     - Japanese
ka     - Georgian
ko     - Korean
la     - Latin
lt     - Lithuanian
lv     - Latvian
mr     - Marathi
ms     - Malay
ne     - Nepali
nl     - Dutch
no     - Norwegian
pl     - Polish
pt     - Portuguese
qu     - Quechua
rm     - Rhaeto-Romance
ro     - Romanian
ru     - Russian
sa     - Sanskrit
sco    - Scots
sk     - Slovak
sl     - Slovenian
sq     - Albanian
sr     - Serbian
sv     - Swedish
sw     - Swahili
ta     - Tamil
th     - Thai
tl     - Tagalog
tr     - Turkish
uk     - Ukrainian
vi     - Vietnamese
yi     - Yiddish
zh     - Chinese (both Traditional and Simplified)
zh.big5        - Chinese (Traditional only)
zh.gb2312      - Chinese (Simplified only)

inactive_languages xx [ yy zz ... ]            (default: see below) This option is used to specify which languages will not be considered when trying to guess the language. For performance reasons, supported languages that have fewer than about 5 million speakers are disabled by default. Note that listing a language in ok_languages automatically enables it for that user.

The default setting is:
bs cy eo et eu fy ga gd is la lt lv rm sa sco sl yi

That list is Bosnian, Welsh, Esperanto, Estonian, Basque, Frisian, Irish Gaelic, Scottish Gaelic, Icelandic, Latin, Lithuanian, Latvian, Rhaeto-Romance, Sanskrit, Scots, Slovenian, and Yiddish.

textcat_max_languages N (default: 3) The maximum number of languages any one message can simultaneously match before its classification is considered unknown.
textcat_optimal_ngrams N (default: 0) If the number of ngrams is lower than this number then they will be removed. This can be used to speed up the program for longer inputs. For shorter inputs, this should be set to 0.
textcat_max_ngrams N (default: 400) The maximum number of ngrams that should be compared with each of the languages models (note that each of those models is used completely).
textcat_acceptable_score N (default: 1.02) Include any language that scores at least textcat_acceptable_score in the returned list of languages.
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perl v5.20.3 MAIL::SPAMASSASSIN::PLUGIN::TEXTCAT (3) 2015-04-28

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