On Tue, 2012-03-13 at 09:48 +0000, Jenny Lee wrote:
> 
> Dear SA Users,
>  
> I am getting this chinese spam every hour. I tried, ok_locales,
> ok_languages with texcat plugin... I tried matching the subject... but
> these people are always getting through.
>  
> http://www.pastebin.ca/2127622
>  
> What rules/modifications do I need to do to get rid of this?
>  
If that UTF-8 prefix - =?utf-8?B? - is specific for Chinese, then a rule
something like:

header __FC1  From =~ /=?utf-8?B?/
header __FC2  From =~ /\.cn>/i
meta   FAKE_CHINESE  (__FC1 && !__FC2)

might do it. 

Equally obviously, if all the spam is coming from Argentina, or
pretending to come from there, and your users never correspond with
anybody from that country, simply deep-six anything with that TLD in the
sender's address. I use a modification of that to treay all mail from
Russia as spam unless it comes from one of the three people I know
there:

describe MG_CYRILLIC  Russian cyrillic spam
header   __MG_CY1 From =~ /\.ru>/ 
header   __MG_CY2 From =~ /person1\@mail\.example1\.ru/ 
header   __MG_CY3 From =~ /(person2\@example2|person3\@example3)\.ru/
meta     MG_CYRILLIC  (__MG_CY1 && !(__MG_CY2 || __MG_CY3))
score    MG_CYRILLIC  12.5

This works well for me and could be trivially adapted to any country,
but ymmv.                 


Martin


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