I have a client with a small office network of about 15 workstations and a single Windows 2000 Server acting as the domain controller, MS Exchange Server for in-house email, file server, print server, etc.
We're considering moving our Internet email in-house using our business DSL line. We already have a static IP address pool we've purchased from the DSL provider and will most likely host our DNS services with a third party entity. What we're considering is going with a Red Hat Linux 9 box in the DMZ to be used as a mail relay to and from our Exchange Server as well as possibly provide other services on the public side of the network (i.e. web services).
This will be a big change for me in that I am relatively new to Linux. I've always supported Microsoft shops. I'm expecting I will have a great deal to learn and intend to setup a Redhat 9 box at home before attempting it at the customer's site.
I guess what I am looking for is any advice any of you might have in this endeavor I will be facing.
Best Regards,
Chris Thompson