[volunteers] (forw) [Mailman-owner] svlug unsubscribe notification

Rick Moen rick at linuxmafia.com
Thu Jun 25 16:11:57 PDT 2009


Something worth knowing is where the posting arrived from.  Even 
though the headers had:

  From: droseman at hotmail.com

...thus claiming to have been sent directly by Dave Roseman from his
Hotmail account, the Received headers reveal its true path.  For 
clarity's sake, I'm going to reverse their order, so that they're 
from earliest to latest:

   Received: from www.stumbleupon.com (sv4web59-be [10.10.20.59])
   by smtp.stumbleupon.com (Postfix) with ESMTP id B3B8063E0
   for <svlug at lists.svlug.org>; Thu, 25 Jun 2009 11:03:46 -0700 (PDT)

This says that the first hop was when the mail originated at
www.stumbleupon.com, which handed it to smtp.stumbleupon.com.

   Received: from smtp.stumbleupon.com ([74.201.117.226]:63441)
   by svlug.org with smtp (Exim 4.44 #1) id 1MJuBR-0002ns-RK
   for <svlug at lists.svlug.org>; Thu, 25 Jun 2009 12:00:44 -0700

Second hop:  Mail host smtp.stumbleupon.com handed it to svlug.org.

I'll skip the third and fourth hops, because those are just where
svlug.org's Exim4 mail program and Mailman turned the message (envelope
recipient set at that point to "svlug at lists.svlug.org") to one with 
envelope set to "rick at linuxmafia.com", and then where svlug.org
delivered that message to linuxmafia.com.

The point is, the message didn't originate at Hotmail, but rather...
   X-Mailer: PHPMailer [version 1.73]
...in a stumbleupon.com Web app, by StumbleUpon on his behalf using 
his Hotmail address as the ostensible origin.

So, what happened?  Probably, Dave Roseman was using StumbleUpon, and
the site asked his permission to use his Outlook (or whatever)
addressbook to notify his friends about how great StumbleUpon is -- and 
Dave gave his permission.  Or something like that.  PHPMailer then sent
out a canned advertisement to all of Dave's "friends", including the
main SVLUG mailing list.

LinkedIn is also infamous for exactly this sort of obnoxious behaviour,
as are any number of other social networking sites.






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