/usr/share/spamassassin/25_head_tests_ja.cf is in spamassassin-rules-ja 9ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | # SpamAssassin rules file: Japanese header tests
#
# Contact: Taku YASUI <tach at debian dot or dot jp>
# Please be aware that values are just my estimates and could be wrong.
# Use with care.
#
# Please don't modify this file as your changes will be overwritten with
# the next update. Use /etc/spamassassin/local.cf instead.
# See 'perldoc Mail::SpamAssassin::Conf' for details.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of either the Artistic License or the GNU General
# Public License as published by the Free Software Foundation; either
# version 1 of the License, or (at your option) any later version.
#
# See the file "License" in the top level of the SpamAssassin source
# distribution for more details.
#
###########################################################################
lang ja header ISO2022JP_CHARSET Content-Type =~ /charset=['"]?iso-2022-jp['"]?/i
lang ja describe ISO2022JP_CHARSET Content-Type $B%X%C%@$K(B charset=ISO-2022-JP $B$,B8:_$7$^$9(B
lang ja score ISO2022JP_CHARSET -1.0
lang ja header MISYOUDAKU_SUBJ Subject =~ /(L\$|L5)>5(Bz|G')9-9p/
lang ja describe MISYOUDAKU_SUBJ $BI=Bj$,L$>5Bz9-9p$K$J$C$F$$$^$9(B
lang ja score MISYOUDAKU_SUBJ 3.5
lang ja header KOMEJIRUSHI Subject =~ /(\"\(|!v)/
lang ja describe KOMEJIRUSHI $BI=Bj$K"(J8;z$,4^$^$l$F$$$^$9(B
lang ja score KOMEJIRUSHI 0.8
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