[Exim] Exim nat'd behind a Firewall, but I'm not a newbee !!…

Hi Guys,

I'd just moved my exim mail inbound relay in a RFC1918 public DMZ,
so the server is not the owner of the public IP that is the MX for my
several domains...

As I'm actually using the so wonderfull @mx_{any,primary and secondary}
fonction to simplify my config file,
I don't know how a can do it now...
I temporarly used a secondary loopback interface with the public ip on this
server:
"ifconfig lo:0 12.34.56.78 netmask 255.255.255.255" but I think it should
be able to configure exim to let it accept the mail, something like this:

domainlist local_domains = +myself : @mx_primary/include=12.34.56.78
domainlist relay_to_domains = @mx_secondary/include=12.34.56.78

ok, I'm dreaming, but if anybody can help !

Thinks,

Benoit DEVIJVER