>Prior to having leased line, the client has been using their Exchange server
>for internal mail only and using one of our in-house Imail servers via the
>internet using a dial-up connection to another ISP.
>
>I thought it would be appropriate to configure their new Imail machine to
>store and forward all their mail to their internal Exchange Server using
>ETRN, but am stuck on a technicality.
That's an awful waste of Imail and the PC just to store and forward. You
realize that there won't be any mail accounts on the Imail machine? Why
not just have your Imail machine relay for him?
I suggest that you put his Exchange box on the GNAT's DMZ interface.
>Basically, as their internal Exchange
>server doesn't use a FQDN, and is using an internal IP, I can't figure out
>how I am to write the MX records and host files to make this work.
What you could do is put the Exchange machine on the 3rd i/f of the GNAT
box, isolated in the DMZ, carefully packet filtering to protect Exchange
and give a public ip and registered domain name to the Exchange box.
Point the client domain.com's MX at your Imail. Your Imail relays to his
ip and domain.com name.
On the GNAT, just set up the packet filtering so only your Imail's ip
address can communicate with his exchange's ip address.
>My current thinking is that maybe I should set up internal DNS for the
>client but not sure how to set this up correctly for this situation and also
>not sure if I'm close to the mark or going totally the wrong direction.
naw, we have large client connected to us via leased line, and all his
workstations come out from behind his Cisco's NAT to use our DNS's. Can't
see why you and GNAT can't do the same.
Len
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