Bug 5555

Summary:	Add DKIM tests to VBounce-BackScatter-Detection
Product:	Spamassassin	Reporter:	C. O. <clemens.oertel>
Component:	Plugins	Assignee:	SpamAssassin Developer Mailing List <dev>
Status:	NEW ---
Severity:	enhancement
Priority:	P5
Version:	SVN Trunk (Latest Devel Version)
Target Milestone:	Undefined
Hardware:	All
OS:	All
Whiteboard:
Attachments:	Patch for lib/Mail/SpamAssassin/Plugin/VBounce.pm Patch for rules/20_vbounce.cf

Description C. O. 2007-07-11 17:58:16 UTC

The attached patch adds DKIM checks to the backscatter detection in the VBounce plugin, in addition to 
using the existing content heuristics.

The idea is that if a site uses DKIM to sign outgoing messages, these signatures should be contained in 
incoming bounces (if the bounces contain a copy of the original message, or at least its headers). 
Additionaly, one can specify additional headers to check for - if a bounce message does not contain the 
header, it might be backscatter (e.g. "X-MyAntiBackScatterHeader").

Comment 1 C. O. 2007-07-11 17:59:15 UTC

Created attachment 4041 [details]
Patch for lib/Mail/SpamAssassin/Plugin/VBounce.pm

Comment 2 C. O. 2007-07-11 17:59:50 UTC

Created attachment 4042 [details]
Patch for rules/20_vbounce.cf