To change the language settings of spamassassin edit the file user_prefs located at /home/username/.spamassassin if it isn’t located there you need to create one.
We need to edit or add values ok_languages with the extra languages you would like to have in the two letter code.
This option is used to specify which languages are considered OK for incoming mail.
Continue Readingok_languages all (allow all languages)
ok_languages en (only allow English)
ok_languages en ja hi (allow English, Japanese, and Hindi)