[ILUG] SpamAssassin Marking all email as spam

[Ryan Frederick]

This is something one needs to do with all statistical-based filters,
not just SpamAssassin's Bayesian component.  I made the mistake of
overtraining a DSPAM install with spam as compared to ham a few years
back, and it had the same effect.  Balancing out the spam overtraining
with a good corpus of ham almost eliminated the spike in false positives.

Ryan


On 12/14/2010 02:31 AM, Stephen Brooks wrote:
> Ger,
> 
>     From the horses mouth as it where
> http://spamassassin.apache.org/full/3.3.x/doc/sa-learn.html jump down to
> the "Getting Started" section.  Basically if you just tell SpamAssassin
> what is spam it'll be biased to marking everything as spam, you also
> need to give it examples of good email, aka ham.  Use the tool sa-learn
> as described above but generally :-
> sa-learn --spam /path/to/spam/folder (if you've got samples of spam in a
> junk folder)
> sa-learn --ham /path/to/ham/folder (your inbox for example)
> 
>     Typoed my name sorry :)
> 
> Regards,
> Steve
> 
> On 13/12/10 23:12, Gerard Hooton wrote:
>> Steeve,
>>
>> "Did you feed SpamAssassin with Ham as well as Spam?"
>> Can you explain or point me to a howto
>>
>> //Ger
>>
>>   
>>> On 13/12/10 15:38, Ger Hooton wrote:
>>>     
>>>> I have Debian 5 with exim 4.69  and SpamAssassin version 3.3.1
>>>> The problem is that ALL email hav the following in the header:
>>>>
>>>> -spam_report: Spam detection software, running on the system
>>>> "xxx.yyy.ie", has identified this incoming email as possible spam
>>>>
>>>> Where should I start to debug?
>>>>
>>>>
>>>>        
>>> Did you feed SpamAssassin with Ham as well as Spam?
>>>
>>> Regards,
>>> Steeve
>>>
>>>      
>>
>>    
>