Of course it is, although we do not recommend it. This setup is known as a "catch all" account. Check the option "Send messages to the mail address found in their message header (catch-all account)" on the POP3 / IMAP account setup form to automatically forward the mail messages to the appropriate accounts. You can also create rules for every SMTP user to declare which mail should be forwarded to which address.
SmartPOP2Exchange has a very detailed eventlog and it deletes a mail from the POP3/IMAP only after it has been successfully delivered to the SMTP server. If any problem occurs, it simply leaves the mail on the POP3/IMAP server until it has been delivered successfully.
Yes, it does. SmartPOP2Exchange consists of a configuration application and a system service. The system service is started automatically when Windows is started and does the actual processing of the email. The configuration application is for monitoring and setup purposes only.
No, SmartPOP2Exchange can be installed on any PC in your network. As it uses the SMTP protocol to send/deliver the mail messages to the Exchange/SMTP Server, it just has to be able to communicate to port 25 of the SMTP / Exchange Server.