The scenario is a small home office, 1 domain controller windows server 2003 and running exchange 2003. 1 workstation using outlook to connect to exchange. Network connectivity is via Virgin Media (VM) Cable Broadband modem and a DLink Router. The external address is allocated by VM using DHCP. In the last few months the numbers of outgoing mail being bounced has increased massively because the external IP address is on DUN lists and there seems to be an increase in the number of Mail Admins who automatically ban SMTP from DUN as spam. Incoming mail is handled using DYNDNS.
Also available is an ADSL connection with a fixed IP address. Is it possible to add an NIC to the domain controller and configure exchange to use this connection to send and receive mail via the ADSL while leaving other internet activity on the DC and the workstation over the Cable connection as it is much faster?
If so it is beyond me and I would welcome advice on how to set it up.