If you need to manually configure your email client. You will need this information.
Incoming / POP mail server is:
mail.yourdomain.com
Outgoing / SMTP mail server is:
mail.yourdomain.com
You also need to enable Server Authentication to send email. DO NOT enable SSL or Secure Password Authentication (SPA).
Also make sure to use the username in this format:
Important Note:
Please make sure to replace yourdomain.com with your own domain.