Commtouch's concern is for ISP's / Service Providers who basically run their business as a potential clean and forward service or similar like postini types.
David _____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Kevin Bilbee Sent: Thursday, March 08, 2007 12:10 PM To: declude.junkmail@declude.com Subject: RE: [Declude.JunkMail] Image spam The way it was explained to me is as follows. If you have customers you charge for email hosting you are hosting company. If you are a company with multiple domains you are not. We have multiple domains and use CommTouch. We have domains for multiple divisions. Kevin Bilbee From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dave Beckstrom Sent: Thursday, March 08, 2007 8:06 AM To: declude.junkmail@declude.com Subject: RE: [Declude.JunkMail] Image spam I'm confused. I understood that if you host multiple email domains on a mail server that you're considered a hosting company and can't purchase commtouch? At least I vaguely recall something to that affect. I checked Declude's site and I don't see commtouch listed on there anywhere (it used to be) other than under "technology partners." Obviously, I'm missing something. So what is the scoop? I need an image spam solution. I followed this discussion, but I didn't see much talk about what people are actually using that currently works well for them. I would most appreciate it if you would share your method for dealing with image spam. We have on particular spam that comes through multiple times every day. Its getting tiring. There isn't enough other things wrong with the message to block it. _____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Kelly Scotto Sent: Wednesday, February 21, 2007 1:04 PM To: declude.junkmail@declude.com Subject: RE: [Declude.JunkMail] Image spam Thank you I will check these out. Kelly _____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of David Barker Sent: Wednesday, February 21, 2007 12:08 PM To: declude.junkmail@declude.com Subject: RE: [Declude.JunkMail] Image spam Declude and Image based spam - 4 methods 1. COMMTOUCH Commtouch Recurrent Pattern Detection contains an intrinsic mechanism to exact-match recurrent patterns across similar but not-identical messages. However in the case of images, the minute the spammer makes even the smallest changes to an image, the image-encoded data appears completely different. Commtouch identified this trend in the earliest days of image-based spam, and made the necessary enhancements to its detection engine in order to defend against this new threat with a sophisticated protection shield. Commtouch invested significant resources into developing a method for decoding the images and then sampling them using the proven RPD approach. The result is a significantly improved spam detection rate, while maintaining the same low false-positive rate. 2. CLAMWIN Using ClamAV as a virus scanner with Declude you can download the MSRBL-Images.hdb file which has additional signatures (MD5 sigs) which contains signatures created from images contained within spam emails. http://www.msrbl.com/site/msrblimagesdownload 3. FILTER-CID Identifies emails which contains images increasing the weight suffeciently on spam messages to reach the spam threshold. #EXCEPTIONS BODY END NOTCONTAINS cid: BODY END NOTCONTAINS Content-Type: image/ #IMAGES BODY 3 CONTAINS src=3D"cid: BODY 3 CONTAINS src="cid: BODY 3 CONTAINS src='cid: BODY 3 CONTAINS img src="cid: BODY 3 CONTAINS img src=3Dcid: BODY 3 CONTAINS /cid: #IMAGE TYPES BODY 2 CONTAINS Content-Type: image/gif; BODY 2 CONTAINS Content-Type: image/jpeg; 4. VAMSOFT IMAGE SPAM AGENT This tool is an External Agent for ORF 2.1 and newer versions that improves ORF by image spam detection capabilities, but can be used by Declude. http://www.vamsoft.com/vsimagespam/vsimagespam.zip VSIMAGE external nonzero "[path]\Declude\VSIMAGE\imgspamagent.exe -check" 4 0 David Barker Director of Product Management Your Email security is our business 978.499.2933 office 978.988.1311 fax [EMAIL PROTECTED] _____ From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Kelly Scotto Sent: Wednesday, February 21, 2007 11:47 AM To: declude.junkmail@declude.com Subject: [Declude.JunkMail] Image spam Has there been a declude filter created for blocking or identifying image spam? If so can somebody post it for me to try. Thank You, Kelly --- This E-mail came from the Declude.JunkMail mailing list. To unsubscribe, just send an E-mail to [EMAIL PROTECTED], and type "unsubscribe Declude.JunkMail". The archives can be found at http://www.mail-archive.com. --- This E-mail came from the Declude.JunkMail mailing list. To unsubscribe, just send an E-mail to [EMAIL PROTECTED], and type "unsubscribe Declude.JunkMail". The archives can be found at http://www.mail-archive.com. --- This E-mail came from the Declude.JunkMail mailing list. To unsubscribe, just send an E-mail to [EMAIL PROTECTED], and type "unsubscribe Declude.JunkMail". The archives can be found at http://www.mail-archive.com. --- This E-mail came from the Declude.JunkMail mailing list. To unsubscribe, just send an E-mail to [EMAIL PROTECTED], and type "unsubscribe Declude.JunkMail". The archives can be found at http://www.mail-archive.com. --- This E-mail came from the Declude.JunkMail mailing list. To unsubscribe, just send an E-mail to [EMAIL PROTECTED], and type "unsubscribe Declude.JunkMail". The archives can be found at http://www.mail-archive.com. --- This E-mail came from the Declude.JunkMail mailing list. To unsubscribe, just send an E-mail to [EMAIL PROTECTED], and type "unsubscribe Declude.JunkMail". The archives can be found at http://www.mail-archive.com.
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