How do I send email with my domain name as the return address?

If you use a POP e-mail reader such as Microsoft Outlook Express or Eudora mail reader just change your 'from:' address to 'sales@yourdomain.com' . If you can not change your from: address you put your e-mail address in the 'reply-to:' field. All other settings such as incoming and outgoing mailserver should be left unchanged.