Hi all: Our GW2012 server lives behind a Border Manager firewall (yes, BM is works for us). BM is configured such that the all outbound email traffic (port 25) will only go to our ISP mail relay (filters out all other traffic). I have a backup server which needs to send notification email to me, but postfix wants to send directly to the mx-record server. I would rather like to set up postfix to send all email to our GW server which in turn will relay it. Will this work? And with using GW as a relay host, can I set it to only relay from certain internal IP addresses?

Hope this makes some sense, Chris.