I'm migrating to Exchange 2000 Server. I currently use a NetScreen Technologies' NetScreen firewall appliance. My private IP addresses are all in the 192.168.x.x address block, and the NetScreen takes care of forwarding all packets to the existing Exchange server. Will I need to change anything?
As long as inbound SMTP mail can reach the Exchange 2000 machine, you can receive incoming mail. For outbound mail, either the Exchange 2000 box or whatever smarthost you forward mail to must be able to send packets through the NetScreen. However, if you already have this process working with Exchange Server 5.5 and its Internet Mail Service (IMS), you won't have problems with Exchange 2000.
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