Following these steps below will make setting up your email accounts in Microsoft Outlook a breeze.

From the top menu of Outlook, select Tools and then Accounts. From here click add and select Mail.

Enter your name as you want it to appear when other people receive mail from you.

Enter your email address.

Ensure you are setting up a POP3 server and set your incoming and outgoing servers as described above. If your domain is not a .com, substitute your own extension (for example mail.yourdomain.net).

Enter your full email address as your account name, followed by your password. Make sure Log on using SPA is not checked off.
*Important* If you are setting up an email account for the default account (the account you use to log into FTP and CPanel for your domain) you do not need to add the @yourdomain.com in the account name field.
After this you can click Next (maybe twice) and then Finish and the account will be set up. There is one final step involved in setting up your account:

Click Tools/Accounts again. Select the account you just created and click the Properties button.
Under the Servers tab you must have "My server requires authentication" checked off.