What is spam? (was: [bogofilter] ESF and redundancy)

[Tom Allison]

Tom Anderson wrote:
> From: "David Relson" <relson at osagesoftware.com>
> 
>>Sorry Tom, bogofilter doesn't check the contents of X-Bogosity: when
>>registering messages.  There's no way to tell if the X-Bogosity line is
>>legit or spoofed.  With a low thresh_update value like 0.01, which
>>excludes messages scoring 0.01 and below or scoring 0.99 and above, the
>>need to correct is really, really low.
> 
> 
> If a person is sending all of their email through bogofilter, and bogofilter
> strips out any X-Bogosity line before classifying, and bogofilter adds a new
> X-Bogosity line before delivering, then it follows that any email in a
> person's inbox has a legitimate X-Bogosity line. 


Check your wordlist and the -vvv output.
X-Bogosity is ignored...


Regarding the threshold.
If you threshold is 0.01 then it applies to spam >= 0.99.  If you get an 
X-Bogosity score of >= 0.99 and you have graded that email as Unsure 
then you probably need to reconsider the spam_cutoff setting you are using.