Re: Filter on language

On Monday 19 Nov 2012 10:09:48 David Jarvie wrote:
> On Sat, November 17, 2012 7:16 pm, Henk van Velden wrote:
> > On Saturday 17 November 2012 19:48:32 Martin Steigerwald wrote:
> >> Am Donnerstag, 15. November 2012 schrieb ianseeks:
> >> > Hi
> >> 
> >> Hi Ian,
> >> 
> >> > I'm getting loads of spam from a japanese sites and i'm now bored of
> >> > updating my junk filters every day .
> >> > 
> >> > Is there a way i can filter out emails that are using asian language
> >> > fonts?
> > 
> > As the only character encoding that is (going to be) used by modern
> > systems is
> > UTF-8 encoded Unicode, filtering on encoding (like the several ISO 8859
> > versions) is not going to work.
> > 
> > @ianseeks: though I understand what you want, talking about Asian fonts
> > will
> > not help in understanding the problem. A font is only a small picture
> > generated to make visable to a human being what a character code is. It is
> > about the Unicode codes you get in the mail. As these are in groups (e.g.
> > Japanese Hiragana is 3040 - 309F) a filter could decide that many
> > characters
> > within specific ranges in a mail could rate that mail as spam. But (as all
> > spam filtering) it is no exact science.
> 
> I use the attached procmail recipes to filter out Asian and other fonts,
> which has worked well for me. (Note that I first started using this a few
> years ago, and it's possible that the spamassassin filter provided by my
> mail provider might these days filter out quite a bit also (e.g. UTF-8
> encoded spam)). If you don't use procmail, you should be able to convert
> the recipes to suit your own filter syntax without too much difficulty.
> See "man 5 procmailrc" if you don't understand some of the procmail
> syntax.

No, i don't use procmail but that script idea would be handy if Kmail could 
use such a feature.

thanks
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