1.)If you are using Outlook 2002/2003
You will need to go to the "tools" menu, and go down and click on "email accounts," you will now be at the "email accounts" screen. You will want to click on the bullet for "view or change existing email accounts" and at the bottom click on the "next" button, as shown below.
2.)On the next screen, click on your account for your domain name (to highlight it) and then click on the "change" button.
(If you do not have an account listed here or if you want to create one in addition to your current ones, click on the "add" button to create one. You will want to select the option for POP3, and click "next".)
3.)On the "internet email settings" page, make sure all the fields are filled in with your information , and then click on the "more settings" button.
4.)On this new window, click on the "outgoing server" tab (at the top) and then make sure that "my out going server (SMTP) requires authentication" is checked. You can leave the bullet on "use the same settings as my incoming mail server" and click ok at the bottom.
5.)You will then want to click on the "next" button.
6.)After this is complete, click on the "finish" button.
You now should be able to send and receive messages.