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Image filter threshold

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Stupid View Drop Down
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    Posted: 05 December 2006 at 9:31am

How do I adjust this? I don't really see much being filtered while stream of image spams are hitting even my mail box.

What is the proper setting number people are using?



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Lee_H View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Lee_H Quote  Post ReplyReply Direct Link To This Post Posted: 12 December 2006 at 10:45am
I would like to know too!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote LogSat Quote  Post ReplyReply Direct Link To This Post Posted: 12 December 2006 at 6:53pm
The image threshold is in the main "Setttings - Configuration" tab in SpamFilter. The higher the value, the more aggressive the filter. Please note that this filter is not going to stop every spam image (as you've already noticed ). The default settings are what we believe are the safest ones, but only trial and error will allow you to improve the values that best fit your environment.
Roberto Franceschetti

LogSat Software

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Post Options Post Options   Thanks (0) Thanks(0)   Quote kfries Quote  Post ReplyReply Direct Link To This Post Posted: 18 December 2006 at 2:51pm
what exactly does the number indicate?  think default is set to 10.  Is this a size of the image or ?  thanks!

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Post Options Post Options   Thanks (0) Thanks(0)   Quote __M__ Quote  Post ReplyReply Direct Link To This Post Posted: 19 December 2006 at 6:27am
Roberto, we see repeat emails on a daily basis with the same embedded image in them. Can I email you a few copies so you can investigate why this particular message is slipping through so often?

Mike
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Post Options Post Options   Thanks (0) Thanks(0)   Quote LogSat Quote  Post ReplyReply Direct Link To This Post Posted: 19 December 2006 at 11:15pm
Sure!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Desperado Quote  Post ReplyReply Direct Link To This Post Posted: 21 December 2006 at 10:17pm

These may be somewhat agressive but, so far I have good luck with the following:

SpamImageThreshold=15
SpamImageColorSensitivity=20
SpamImageMinWidth=200
SpamImageMinHeight=125
SpamImageSamplingPoints=200

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Dan Seligmann.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Stupid Quote  Post ReplyReply Direct Link To This Post Posted: 22 December 2006 at 12:02pm

I just ban all of src=cid:

 

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Post Options Post Options   Thanks (0) Thanks(0)   Quote ImInAfrica Quote  Post ReplyReply Direct Link To This Post Posted: 22 December 2006 at 6:04pm

desperado - are you actually using these settings?
"somewhat agressive" looks like a major understatement.
we tried settings similar to these, but got a lot of false positives. especially with outlook stationery.

out threshold doesn't come near 15. more like 8-9

 

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Desperado Quote  Post ReplyReply Direct Link To This Post Posted: 26 December 2006 at 12:13pm
Yes,  Those are our settings and we have had no complaints so far (about 2 weeks at that setting) but are watching it on a regular basis.  We also have a customer base of 95% business and most of these users do not BS around with fancy "stationary" of smiley faces or other "features".  Most are running mail systems that are controlled by their mail administrators and most run their logos past our filters to make sure they are not blocked.
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Personal: http://www.desperado.com

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