Enter 'mail.terabolic.com' in the Server Name field. Click Next.
Double check that the User Name is correct. It should be set to your full username.
Enter a desciptive name for your account configuration in the Account Name field and then click Next.
Verify your account information and then click Finish.
Select the Server Settings category for your newly created account. Check the box titled Use secure connection (SSL). Make sure the Port is set to 993.