Custom rules for spamassasin?

[Scot L. Harris]

On Sun, 2005-11-13 at 10:52, Andy Pieters wrote:
> Hi List
> 
> We are getting quite some spam from japan and spamassassin doesn't consider it 
> as spam.

Have you utilized any of the rule sets at http://www.rulesemporium.com/
?

They have a number of rule sets that will significantly increase the
score on spam.  

You can also write your own custom rules that can increase the scores
enough to identify the spam but leave ham untouched.