Please confirm with your Internet Service Provider (ISP) if they’re blocking both ports ( 25 and 587). If they do, ask your ISP to give the settings to their SMTP so you send your message. If both ports aren’t block, please allow us to access your account. Before you grant us the permission to access it, please check out our solution article below:
http://windowslivehelp.com/solutions/newvisitor/archive/2009/06/22/things-to-do-before-granting-access-to-your-account-to-support-agents.aspx