Pitfall in Bogofilter

[.rp]

From:           	David Relson <relson at osagesoftware.com>
To:             	bf-users <bogofilter at bogofilter.org>
Date sent:      	Sun, 17 Sep 2006 21:12:46 -0400
Subject:        	Re: Pitfall in Bogofilter

> On Sun, 17 Sep 2006 21:22:42 +0200
> Rudi Lippert wrote:
> 
> > Hi.
> > 
> > I know this is not the usual way to submit problems, but I'm not
> > going to sign up at sourceforge or join the mailing list just to
> > state one problem. So, there it goes: Since Bogofilter has changed
> > the X-Bogosity header from 'Yes' to 'Spam', it is no more possible
> > for simple mail clients to filter using a rule like 'X-Bogosity
> > contains spam', since the header always contains the word 'spam'
> > inside the word 'spamicity'. So, if someone uses this kind of
> > filter, they will end up with no mail at all - as happened to me
> > lately after I set up the filter in KMail without looking carefully
> > enough.
> > 
> > This problem could be worked around by moving the spamicity
> > histogram to a separate header named 'X-BogoHistogram' or something
> > like that.
> > 
> > Cheers,
> > 
> > Rudi
> 
> Hello Rudi,
> 
> Evidently you've been using bogofilter for a long while and it's been
> a long while since you updated.  The change from Yes/No/Unsure to
> Spam/Ham/Unsure was made over 1.5 years ago -- on 9 Jan 2005 and
> released in version 0.93.5 on 22 Jan 2005.
> 
> The X-Bogosity looks like:
> 
>    X-Bogosity: Spam, tests=bogofilter, spamicity=0.9876543, ...
> 
> and there are lots of ways to distinguish spam from ham.  Here are
> some methods:
> 
> - If your mail client is case-sensitive, test for "Spam" rather than
> "spam".  
> 
> - Have you tried including the comma, i.e. testing for "Spam,"?  
> 
> - I use Sylpheed-Claws as my MUA and include enough context to
> distinguish between "spam" and "spamicity" by testing for "X-Bogosity:
> Spam".
> 
> - Bogofilter's configuration file, i.e. bogofilter.cf, includes the
> ability to format the X-Bogosity line and use any set of tags you
> want.  Rather than Spam/Ham/Unsure you could use Good/Bad/Uncertain or
> you could use John/Paul/Ringo or any other three words!
> 
> I've CC'd my reply to the bogofilter mailing list so that this
> response will be in the public record and can be found by googling.
> 
> HTH,
> 
> David
> 
> 
I thought one could use the configuration file to keep the "yes/no/maybe"