Question : Microsoft, Exchange Server, 2007, setup cannot verify that the Host "A" record for this computer exists within the DNS database located on server (The Server IP address)

I am getting this error while attempting to install exchange server 2007 onto my server.  How do i fix it?

Answer : Microsoft, Exchange Server, 2007, setup cannot verify that the Host "A" record for this computer exists within the DNS database located on server (The Server IP address)

Ah, the DNS servers haven't been changed on the public NIC (the one with IP address 68.42.20.207).  192.168.2.1 should be its primary DNS server as well.  (Make sure those ISP DNS server address are set up as forwarders, though, or you could lose your ability to see the Internet.)