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I have an exchange server on a private network connected by broadband to the Internet through a router by NAT. The router supports PPTP and IPSEC L2TP for Access Control and Port Forwarding. I wish to use email forwarding from the company providing me with a domain name and was wondering whether it would be possible to use a public static ip address as a &quot;virtual email server&quot; which would route all email through a VPN from the public static ip address to the physical server which resides on the private network. In turn I would like all emails originating on the physical email server to be routed through the VPN to the public static ip and onto the Internet. Is this possible and what specificaly would I need to ask the domain name provider and email forwarder to provide for me?
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I have an exchange server on a private network connected by broadband to the Internet through a router by NAT. The router supports PPTP and IPSEC L2TP for Access Control and Port Forwarding. I wish to use email forwarding from the company providing me with a domain name and was wondering whether it would be possible to use a public static ip address as a "virtual email server" which would route all email through a VPN from the public static ip address to the physical server which resides on the private network. In turn I would like all emails originating on the physical email server to be routed through the VPN to the public static ip and onto the Internet. Is this possible and what specificaly would I need to ask the domain name provider and email forwarder to provide for me?

Email forwarding through a VPN

A virtual private network (VPN) is a network that uses a public telecommunication infrastructure, such as the Internet, to provide remote offices or travelling users access to a central organizational network securely. VPNs encapsulate data transfers using secure cryptographic methods and other security mechanisms to ensure that only authorized users can access the network and that the data cannot be intercepted.