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My company uses Exchange 2007 for our mail server (via 3rd party hosted service), I use OS X Mail.app on my MacBook Pro.

When viewing my junk folder in the webmail interface, there's a "Not Junk" button which will move the email out of the Junk folder. I can mimic the basic functionality in Mail.app by dragging the message from the junk folder to another folder.

But... does this train the server?

Specific questions:

  1. Does pressing the "Not Junk" button in the webmail interface (or Outlook) do anything more on the server side? Does Exchange used any sort of statistical spam filtering (e.g. bayesian filtering) based on this action?
  2. If the answer to #1 is yes, does moving the folder out of the junk folder in Mail.app trigger the statistical learning?
  3. If the answer to #2 is no, is there a different way to trigger the learning?
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