I am attempting to set up Postfix on a virtual machine using VMware in bridged mode. The idea is to scan my incomming mail and then forward it to Exchange for delivery. The vm is running on a Windows Server 2003 Standard. Exchange is running on a Small Business Server located at 192.168.1.106. The vm is using the IP address 192.168.1.191 and is accepting incoming traffic on port 25. I would like the vm to accept port 25 traffic and forward to my exchange server. I have my linksys router set to forward all incoming port 25 traffic to the vm at 192.168.1.191. The problem is that exchange is getting the mail off the network before the vm is and I can not figure out how. Even when I turn off port forwarding on the linksys router the exchange server seems to get the mail. But if I turn off port 25 neither exchange nor postfix answers on port 25 from an outside telnet. When a message is sent it shows up in my outlook inbox and never goes through vm and postfix or my router on port 25. Anyone have any ideas?