Cannot send or receive emails on Windows Live Mail 2011.  Server error message

Unable to send or receive messages for the Home Mail account. The email server returned an error.

Server Error: 0x800CCC90
Server Response: -ERR [SYS/TEMP] problem retrieving message.
Server: 'inbound.att.net'
Windows Live Mail Error ID: 0x800CCC90
Protocol: POP3
Port: 995
Secure(SSL): Yes