You can report junk email to Microsoft for analysis. This will allow for the reduction in volume of junk email messages. Below are the directions to report a message.
Step 1
Create a new, blank message and add the spam message as an attachment.
Step 2
Copy and paste the original spam message subject line into the new message subject line.
Important: Leave the body of the new message empty.
Step 3
Send your new message to abuse@messaging.microsoft.com.