If you have a MSN (Microsoft) email such as @live.com,@hotmail.com or @outlook.com then you can use the service to relay your site email.
Configuration - Setup E-Mail :
Mail Server DNS: smtp.live.com
Mail Server Username: Your complete Windows Live Hotmail email address ("me@hotmail.com" or "me@live.com" for instance)
Mail Server Password: Your Windows Live Hotmail password
Mail Server TCP Port: 587
Mail Server Requires SSL: yes
NOTE: For Office 365 setup, review THIS article. Option 1 is preferred.Check with your email service administrators if that is not functioning for you.