In this article it is described how to configure Exchange 2003 server for internet email with POPcon for downloading the email from POP3 mailboxes.

It only takes these four steps:

1. Adding your internet domain name to the recipient policies.
2. Configuring the SMTP server for inbound email.
3. Adding a SMTP Connector for outbound emails.
4. Configuring the email addresses of your users.

To learn how to repair Exchange Server go here.