Spam Filter ISP Support Forum

  New Posts New Posts RSS Feed - Image filter threshold
  FAQ FAQ  Forum Search   Register Register  Login Login

Image filter threshold

 Post Reply Post Reply
Author
Stupid View Drop Down
Senior Member
Senior Member


Joined: 28 November 2005
Status: Offline
Points: 127
Post Options Post Options   Thanks (0) Thanks(0)   Quote Stupid Quote  Post ReplyReply Direct Link To This Post Topic: Image filter threshold
    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?



Edited by Stupid
Back to Top
Lee_H View Drop Down
Newbie
Newbie
Avatar

Joined: 29 November 2006
Location: United States
Status: Offline
Points: 7
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!
Back to Top
LogSat View Drop Down
Admin Group
Admin Group
Avatar

Joined: 25 January 2005
Location: United States
Status: Offline
Points: 4068
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

Spam Filter ISP
Back to Top
kfries View Drop Down
Newbie
Newbie


Joined: 16 August 2006
Status: Offline
Points: 7
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!

Edited by kfries
Back to Top
__M__ View Drop Down
Groupie
Groupie


Joined: 30 August 2006
Location: Australia
Status: Offline
Points: 75
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
Back to Top
LogSat View Drop Down
Admin Group
Admin Group
Avatar

Joined: 25 January 2005
Location: United States
Status: Offline
Points: 4068
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!
Roberto Franceschetti

LogSat Software

Spam Filter ISP
Back to Top
Desperado View Drop Down
Senior Member
Senior Member
Avatar

Joined: 27 January 2005
Location: United States
Status: Offline
Points: 1143
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

The Desperado
Dan Seligmann.
Work: http://www.mags.net
Personal: http://www.desperado.com

Back to Top
Stupid View Drop Down
Senior Member
Senior Member


Joined: 28 November 2005
Status: Offline
Points: 127
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:

 

Back to Top
ImInAfrica View Drop Down
Groupie
Groupie
Avatar

Joined: 27 June 2006
Location: FL, USA
Status: Offline
Points: 60
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

 

Back to Top
Desperado View Drop Down
Senior Member
Senior Member
Avatar

Joined: 27 January 2005
Location: United States
Status: Offline
Points: 1143
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.
The Desperado
Dan Seligmann.
Work: http://www.mags.net
Personal: http://www.desperado.com

Back to Top
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down



This page was generated in 0.062 seconds.