Your Domain Mail settings
If you're using a mail client such as Windows Live Mail, or Microsoft Outlook, you'll need to set up an account through the Tools menu so that you can access mail being sent to you at your domain.
The incoming and outgoing mail servers use the same name for both POP3 and SMTP – mail.yourdomain. The exception to this is when some Internet providers block a function called SMTP Relay in an attempt to control SPAM. If you set up your new mail account only to find the no one is receiving the mail you're sending, change the SMTP server to be that of your ISP and the problem should go away. As always, there's one exception that I know to this, and this is Telecom NZ's Xtra, where you may also need to add the email address to their safe senders list.