On 06/10/10 11:38:45, Bradley Giesbrecht wrote:
> I noticed an email that I did not send to myselff with the same "From"  
> and "To" address and an "X-Dspam-Result: Whitelisted" header.

I ran into this situation today.

  From u...@example.com  Fri Aug 27 08:32:24 2010
  From: u...@example.com
  Received: from mail.example.com (example.local [10.10.1.1])
          by localhost.local (8.14.4/8.14.4) with ESMTP id o7RFWOb9004675
          for <u...@localhost.local>; Fri, 27 Aug 2010 08:32:24 -0700
  Received: from 82.160.134.3 ([82.160.134.3])
          by mail.example.com (8.13.8/8.13.8) with ESMTP id o7RFWEtU015083
          for <u...@example.com>; Fri, 27 Aug 2010 08:32:19 -0700
  Date: Fri, 27 Aug 2010 08:32:14 -0700
  To: u...@example.com
  Subject: u...@example.com V|AGRA \256 Official Seller -75%
  X-Spam-Score: 34.306 (**********************************)    
  
DRUGS_ERECTILE,DRUGS_ERECTILE_OBFU,FUZZY_VPILL,HTML_IMAGE_ONLY_08,HTML_MESSAGE,
  
HTML_SHORT_LINK_IMG_1,MIME_HTML_ONLY,MISSING_DATE,RCVD_IN_BL_SPAMCOP_NET,RCVD_IN_SORBS_WEB,
  
RCVD_IN_XBL,RCVD_NUMERIC_HELO,RDNS_NONE,SUBJECT_NEEDS_ENCODING,TT_OBSCURED_VIAGRA,
  
TVD_RCVD_IP,TVD_RCVD_IP4,URIBL_AB_SURBL,URIBL_BLACK,URIBL_JP_SURBL,URIBL_WS_SURBL
  X-DSPAM-Result: Whitelisted
  X-DSPAM-Confidence: 0.5664
  X-DSPAM-Probability: 1.0000

Does DSPAM include the incoming IP address with the Sender's
email address, and then use that (sender, IP) pair to identify
the sender for the purposes of whitelisting?  If not, it seems
that might help in the use case above.

Is there a way to tell DSPAM about "trusted" IP addresses (in
a fashion similar to SpamAssassin)?

In the situation above, mail.example.com, is the domain's
mail server.  Thus, the sender's IP address, 82.160.134.3,
can be reliably determined, and then combined with the sender's
IP address in ordere to form the (sender, IP) pair.
If DSPAM were able to follow the chain of Received headers
out to the last "trusted" IP address, then it could determine
the last known reliable IP address and use that when calculating
the Sender's identification for the purpose of white listing.

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