I currently have a Cisco ASA 5510 firewall and an ISA 2004 server running. The ISA server has 220.127.116.11 on external and the Cisco has 18.104.22.168 on external. Both of them are plugged into the router which is 22.214.171.124. The MX records point to mail.domain.com which points to 126.96.36.199 which is our ISA server. Our OWA access goes through the 188.8.131.52 as well which is our ISA server. Our VPN connects through the Cisco on 184.108.40.206 so all of our clients connect to that address. I would like to pull the ISA server from the network. Is there a way to get email and OWA to go through the CIsco and not have to change any of the MX records and still be able to connect our VPN through the current address. Basically I want the Cisco to accept traffic coming in for 220.127.116.11 and 18.104.22.168. We don't have any other servers that need to be connected to the outside, only the Cisco. The Cisco will need to forward mail to Vamsoft ORF server and then it forwards mail on to the Exchange server. The OWA will need to go directly to the Exchange server. Is this possible?