[ILUG] Additional spam protection

[Thomas Pedoussaut]

fuzzix wrote:
> Colm Buckley wrote:
>>     * All incoming list messages have HTML and image parts removed
>>     * If the resulting mail contains only whitespace, it is dropped
>
> Good stuff - thanks.
>
> I'm running two mail servers with spamassassin. I get lot of those 
> messages with animated GIFs containing useful and interesting stock 
> information + random text appended making it through on both of them.
>
> Has anyone come across a way to filter these? I could just block 
> animated GIFs, I guess, but people tend to send those to each other...
If you have a beast for filtering, there is 2 options:
* FuzzyOCR
   http://users.own-hero.net/~decoder/fuzzyocr/
Basically, it OCR's the image and then spamassassin can use the content 
to filter (based on presence of STOCK, TICKER ....

* ImageInfo
   http://www.rulesemporium.com/plugins.htm
ImageInfo is based on number and size of images in the message.
ImageInfo will (may) be included in the next release of spamassassin.

I didn't tried it though, I dont have the ressouces to do that on a 
gateway transiting 10.000+ messages a day.

-- 
Thomas Pedoussaut <thomas at pedoussaut.com>