While am using 1:1 NAT for my exchange server everything is working perfect. When am configuring 1:Many NAT to exchange server SMTP outbound is taking MX 100 Public IP address. Public IP for MX 100: X.X.X.20 Public IP for Exchange : X.X.X.21 LAN IP for exchange: 192.168.1.6 LAN IP for Email security Gateway: 192.168.1.7 while am configuring 1: many as below X.X.X.21:25 to 192.168.1.7 and all other ports to 192.168.1.6. outbound traffic is going through X.X.X.20 only. Any solution for this?
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