Re: [exim] SPAM Filtering - Losing the war!

On 25/10/06, Marc Perkel <marc@???> wrote:
>
>
> Peter Bowyer wrote:
> On 25/10/06, Marc Perkel <marc@???> wrote:

> Wakko Warner wrote:

>
>
> Have you tried gocr? I have, it's not the greatest, but it is possible
> that
it can read the image and allow you to react on the content of the
> image.
It's not that great yet, but I think it could have potential (until
> spammers
start using the other characters in the images like they are in
> text spam)



> I have started to install it several times and got distracted. I think
> I
will try it.

> We've just implemented the FuzzyOCR plugin for SA, which uses gocr
under the
> covers. It's catching 100% of the current wave of image spam
with no FPs
> reported yet. Very impressed.

Since the OCR is farly expensive I might look
> at pulling out the SA
plugin bits and implementing the guts as a perl module
> to call
directly from Exim (before SA), where I can be a bit more choosy
> about
which attachments I choose to process.

Peter



>
> That would be great if we can create an Exim equiv of the Fuzzy OCR code.
> I'd rather drop it in Exim so that SA never sees it and therefore never gets
> to poison my bayes filters.
>

Agreed - the example posted earlier is by its own admission not
'fuzzy' - I'll do some testing on it and see how it performs. Maybe it
needs a bit of the fuzziness from FuzzyOCR.

Peter

--
Peter Bowyer
Email: peter@???