Im trying to work out how to add a exception for smtp on 2 different routers which are on 2 different subnets, by adding a static route on 1 router for the other and pointing to the same destination on router/subnet 1.
Router 1 is a draytek 2820 router 2 a netgear
So router #1 is working fine port 25, router #2 is connected to router 1 using WLAN2 port on router 1 botth these routers have a dedicated ADSL line with a static IP. If I try and add a static route to router 1 on router 2 thats fine – but as soon as I try and port forward port 25 and point it to router 1 I get illegal IP – which it is as its on the different subnet.
Below is a pic for clarity – any suggestions please?
Your best bet may be to assign the static IP address of router 1 to the releavnt MX records or service configuration you are using so that your email is delieverd to the desired IP address in the first place.