On Mon, Oct 7, 2019 at 4:07 PM Jaroslaw Rafa <r...@rafa.eu.org> wrote:
> Dnia 7.10.2019 o godz. 16:01:26 Brandon Long pisze: > > > > What value does the reputation calculation have of an IP that's sent 20 > > messages to us in the last 30 days? > > Because the volume of messages is so low, I guess you should assume that > they are OK unless it is *proven* that they are spam (eg. several users > have > manually marked them as spam, or the sender has been blacklisted as known > spammer - but again, *that particular server* has been blacklisted and not > the whole netblock). > Except it's usually trivial for folks within a netblock to move their traffic from one IP to another. Even if all these messages were spam, you are off by 0.01% as you argumented > previously. :) > > It is always better to let the possible spam go through than to filter out > something that is not spam. It's easy for user to mark unwanted message as > spam, it's harder to notice that there's something important in the spam > folder. > That's why you have target values for false positives and false negatives, and those don't need to be the same targets. Brandon
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