Some tips to help you set up your email for sending and receiving through outlook express or any other email application:
Your Incoming and Outgoing mail server is: mail.yourdomain.com (replace yourdomain.com with your real domain name).
Use your full email address as your POP3 username (ie. email@example.com)
Do not log-in using Secure Password Authentication.
Under Advanced tab, change SMTP port from 25 to 26.