======How to 'share' domains between Exchange and VPOP3======
If you want to have a VPOP3 server and Exchange Server using the same email domain, then you need to ensure that Exchange does not think it is 'authoritative' for the domain in question.

See [[http://support.microsoft.com/Default.aspx?kbid=321721]] for details of how to do this in Exchange 2000 and 2003 (a similar process may be used in later versions of Exchange - contact your Microsoft Support technician if you need more help).

In VPOP3 you would usually use LAN Forwarding to forward the messages for the relevant users to Exchange. See [[setting_up_vpop3_to_work_with_microsoft_exchange|this article]] for more details.