Senders emailing my new Outlook.com account receive a "Delivery Failed Notification" email from the Hotmail Postmaster; however the delivery failed email references my old hotmail.com account rather than the new flatsob*****@outlook.com email address.
 
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*** Email address is removed for privacy ***
to me

 

This is an automatically generated Delivery Status Notification.

Delivery to the following recipients failed.

       rden*****@hotmail.com

Final-Recipient: rfc822;rden*****@hotmail.com
Action: failed
Status: 5.5.0
Diagnostic-Code: smtp;550 Requested action not taken: mailbox unavailable

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Please assist,

Rob