Protecting an Exchange server?

["bob martin" <bobmartin_613 () hotmail com>]

If you want a free, secure way to do this, install squid on a linux box.  It 
can relay smtp as well.  Just make sure to set the configs right so you 
don't become an open relay to everyone.
Best of luck.


Hello,

I'm wondering if there is any way to locate an Exchange server on my 
internal network and place some kind of email appliance on our DMZ to 
actually send and receive email to the world and to the Exchange server on 
my internal network?

Basically, I don't want my Exchange server to be accessible to the world in 
any way.

So ..

Internet -> My Email Appliance -> Firewall -> Exchange Server

I envision setting up a dedicated route in the firewall between the email 
appliance out on the Internet and my Exchange server behind the firewall on 
my local network?

Are there any email appliances that can work with Exchange in this way? It's 
my (limited) understanding that Exchange server can't "pop" to another email 
server to pull each Exchange users email, so I'm not sure exactly how or if 
my plan could be put into action.

Thanks,

Mark

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