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Bad IP address??

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by asexton

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Twice in the last few weeks our Exchange 5.5 server (Dell Poweredge 2550 with Intel Gigabit NIC) has lost connectivity to the network. It sees everything fine and produces no error messages, yet no one can see it on the internal network. We can, however, ping it. I tried a different hub, etc., and uninstalled and reinstalled TCP/IP - still did not work. The ONLY fix I could successfully implement was to change the internal IP address of the server, and have our firewall people re-NAT the external address. Since it's happened twice, it must be more than a fluke. Any ideas?? I've never heard of an IP address going "Bad".

Thanks!
Anne Sexton

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by timwalsh

If your are using NAT, I'm assuming you are also using DHCP.

I suspect the problem may be that the IP addresses that you have been giving this server were included in the DHCP scope, thus more than one computer would have ended up with the same IP address. This is normal cause of an IP address going "bad."

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