Also, i've noticed that in the case where the sender obfuscates the subject, they include the non-obfuscated UCE tag in the body.
After reading the WiKi, it appears that this list is the appropriate place to submit these. Please correct me if I'm mistaken.
here are the rules (inline):
## ISO-2022-JP spamassassin rules
### Japanese required UCE subject (shou nin daku kou koku)
header L_SUBJ_JAPAN_UCE_2 Subject =~ /\e\$B.*(?:L\$>5Bz|EE;R%a!<%k)(?:8x|9-)9p/
describe L_SUBJ_JAPAN_UCE_2 Subject contains Japanese UCE tag
# check body for "shou nin daku kou koku" UCE tag
body L_BODY_JAPAN_UCE /\e\$B.*(?:L\$>5Bz|EE;R%a!<%k)(?:8x|9-)9p/
describe L_BODY_JAPAN_UCE Body contains Japanese UCE tag
alan
