As of yesterday I am suddenly unable to send emails via Windows Live Mail 2011.  I can receive them OK.  I have tried to repair Windows Essentials 2011 but that didn't fix the problem.  I receive the following message:

The connection to the server has failed.

Subject 'Fw: test'
Server: 'smtp.virginmedia.com'
Windows Live Mail Error ID: 0x800CCC0E
Protocol: SMTP
Port: 25
Secure(SSL): No
Socket Error: 10060