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| Not much is widely available as to how Hotmail has setup their spam filtering. What is known is the basics such as infrastructure diagnostics, authentication (DKIM/Sender ID), and IP reputation will have an impact. In addition, users can contribute by the number of complaints and/hitting "this is junk" button. Lastly, a measure of content scanning will contribute to Hotmail's overall decision to flag your email as legit or spam. |


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