Would some experts look at this and tell me if this is going to work please?
Intro: I need mail from the internet , to reach my internal mail server.
In the diagram, I am doing kind of a half a$$ DMZ by using two cisco routers with a back-to-back cable. This segments the network, but makes one too many networks than I need (dont need the extra 192.168.0.0) However, this is all I have got to work with. Ideally I should be using two firewalls to create a DMZ (I know), but I dont have those yet.
Problem: I need to have internet email reach my internal mail server. I am not sure it is possible with the way I have things set up.
Is there a way for mail sent to firstname.lastname@example.org to reach my internal mail server? Will all those NAT translations screw anything up?