This morning, I received over 2000 messages with email attachments from an old Sharpoint Alerts account.  I deleted them all in Outlook (although half of them still appear in Outlook .com).

My problem is now I cannot receive email.  The sender gets a Diagnostic-Code: smtp;550 Mailbomb Target  message. 

The attached message reads:
Reporting-MTA: dns;SNT0-MC3-F31.Snt0.hotmail.com
Received-From-MTA: dns;mail-pa0-f48.google.com
Arrival-Date: Wed, 21 Aug 2013 13:10:45 -0700

Final-Recipient: rfc822;<my email account address>
Action: failed
Status: 5.5.0
Diagnostic-Code: smtp;550 Mailbomb Target

Does this mean I've been flagged somehow? Do I have to wait until tomorrow to get email?  How do I clear this up?