I have a VPN tunnel between 2 remote locations. Each locations have an exchange server running on (SBS 2008). One location, we'll call it "location A" has a barracuda spam firewall. Location B does not have a barracuda. The location A server IP is 172.16.1.14 and the Barracuda address is 172.16.1.9. The location B server is at 192.168.3.7.
I woud like to send all incoming port 25 traffic from the Location B firewall, throught he VPN tunnel to the Barracuda. I already have the Barracuda programmed to filter mail from the Location B domain and then send it to the Location B exchange server.
I can ping back and forth between networks. Is it possible to route port 25 traffic through the firewalls as specified, if so, what commands would I have to enter. I have tried routing port 25 traffic from the location B firewall to the barracuda but it is not reaching the barracuda. I am ussuming it is being blocked by the location A firewall and I am not sure how to allow the traffic.