Read the IPCHAINS howto, and FIREWALL howto. Also NETWORKING howto, to give
you the basics if you need them.
All you need to do is forward ports 25, 110, and 443 (if you are using
IMAP) from your external firewall interface to the IP address of your
Exchange server. It's quite easy once you
I have done something similar but without exchange. See if this works. My
situation is that I have a Mandrake box acting as a firewall to the
internet. Thier email accounts are at an ISP so what I do is I set up
Postfix or Sendmail and just run it. When I set up the clients I have thier
This can be done! You'll need portfw or rinetd to route smtp from your Linux
box to the internal Exchange box. I'd even suggest you take a look at Astaro
Security Linux (www.astaro.com), which can can incoming and outgoing email! I
have it setup at a client and it works great.
Doug Gough
