On Fri, 16 Jul 2010 13:32:53 +0200
Cyril' <ds...@minou.biz> wrote:

> Hi all,
> 
Hello,


> Let's assume I have an organization where I want an antispam installed,
> but the users are too dumb/busy/unhelpish to process their own receied
> spam and forward it to the retrain process, in any way. (Not an academic
> problem, it's the story of my life). I don't even talk about using a web
> gui for that.
> Would dspam be the right tool for them??
>
Yes.

> I can handle doing the retrain
> myself  for the first days/weeks, but after that, each new false
> negative, not retrained, will let dspam believe more and more that it is
> ham, and at the end, nothing more will be filtered, right?
> 
Wrong. If you use TOE ([T]rain [O]n [E]rror) then a not corrected error (either 
False Postive or False Negative) will not influence the tokens at all. The only 
influence it will have is that the counter for each class (Spam / Ham) will be 
increased and that counter will have a influence on the accuracy but in my 
experience the wrong classification will balance/compensate each other. So at 
the end your tokens will not get better nor will they get worse. They +/- stay 
on that level and the accuracy will do the same.


> Or could there be a strategy to accomodate this?
> 
YES! Use the group support of DSPAM. That will help to boost accuracy. For 
example using a merged group will help to boost the accuracy for all group 
members at once without the need to train each user individually. Or if you 
have groups of users sharing +/- the same type of mail content then put them in 
a shared or shared,managed group and correct errors there from time to time.

> (No, changing this customer is not an option for my business...)
> 
What you have there is something most of us have to deal with. It is pretty 
common to have users not being able or not being capable to train.

> Ideas welcome,
> 
What MTA are you using? Maybe I could help to harden your setup? I have so far 
helped two users from the DSPAM mailing list to harden their setup and I would 
say that those little things have helped to cut their Spam rate by factors.

@Marko Weber and Paul Cockings: If you are reading this... could you post your 
experience with the hardened setup? I think Cyril could benefit from some input.


> Cyril'
> 
-- 
Kind Regards from Switzerland,

Stevan Bajić

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