[Dspam-user] "aggressive" spam filtering / misconfiguration?

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[Dspam-user] "aggressive" spam filtering / misconfiguration?

Allen B. Riddell
Hi Dspam-users,

Are there any recommended settings for someone who is willing (and
interested in) accepting a much higher rate of false positives (even as
high as 10%) in order to reduce the false negative rate? I don't see any
simple way to do this in the settings -- only the indication that

ProcessorBias=on

will bias the filter towards innocent (I've set it to off).

It is possible I have something misconfigured, I am seeing a lot of spam
that has identical "From:" names to previously spam-tagged messages. My
current dspam stats file has:

270,1675,158,1,0,0

which doesn't seem to square with the fact that I've been moving many
messages into the Junk/ IMAP folder. If I'm reading the line correctly,
it seems to be telling me there's only been 1 false negative -- but
that can't be right since that's precisely my problem.

Thanks,

Allen

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Re: [Dspam-user] "aggressive" spam filtering / misconfiguration?

ktm@rice.edu
On Wed, Jun 24, 2015 at 08:14:07AM -0400, Allen B. Riddell wrote:

> Hi Dspam-users,
>
> Are there any recommended settings for someone who is willing (and
> interested in) accepting a much higher rate of false positives (even as
> high as 10%) in order to reduce the false negative rate? I don't see any
> simple way to do this in the settings -- only the indication that
>
> ProcessorBias=on
>
> will bias the filter towards innocent (I've set it to off).
>
> It is possible I have something misconfigured, I am seeing a lot of spam
> that has identical "From:" names to previously spam-tagged messages. My
> current dspam stats file has:
>
> 270,1675,158,1,0,0
>
> which doesn't seem to square with the fact that I've been moving many
> messages into the Junk/ IMAP folder. If I'm reading the line correctly,
> it seems to be telling me there's only been 1 false negative -- but
> that can't be right since that's precisely my problem.
>
> Thanks,
>
> Allen
>

Hi Allen,

Your false negative rate is very low = 1. I am not sure why you need to
get it any lower. Items moved into the Junk folder would be false positives
and not false negatives. The ProcessorBias does not really have an effect
once the initial training has been completed. What tokenizer settings are
you using?

Regards,
Ken

------------------------------------------------------------------------------
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OpManager is web-based network management software that monitors
network devices and physical & virtual servers, alerts via email & sms
for fault. Monitor 25 devices for free with no restriction. Download now
http://ad.doubleclick.net/ddm/clk/292181274;119417398;o
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