Checkpoint Firewall (NGX R61) - ARP Cache - Exchange 2000 Server

[chimmie]

Hi There !

I have an issue with my ARP Cache between my Microsoft Exchange 2000 Server and my Checkpoint Firewall (NGX R61)
I think that (for some reason) my firewall is reporting back it's MAC with the Exchange Server's IP Address.
This prevents the Exchange Server from coming back up on the network after a reboot.

Here is a brief description of the relevant parts of my current network:

E-Mail Server (MS Windows 2000/Exchange 2000)
(ip = xx.yy.zz.53/24)
(MAC = AA-BB-CC-DD-85-19)

Switch

Router

FW = Checkpoint NGX R61 (ip = xx.yy.zz.45/24)
(MAC = AA-BB-CC-DD-DE-8B)


So, what happens is that when I reboot my Exchange Server, the ARP Cache (by checking both the router and the firewall's ARP Cache)
reports that the Exchange Server's IP Address (xx.yy.zz.53) belongs to fierwall MAC (AA-BB-CC-DD-DE-8B) and my Exchange Server
won't come back up on the network.

The only way to get the Exchange Server to come back up on the network (so far) has been to remove the LAN cable (internal network) from the firewall's interface
and then reboot the Exchange Server. When it then comes back up, the ARP cache looks good (i.e. Both Router and Fierwall's ARP Cache reports that the Exchange Server's IP Address (xx.yy.zz.53) belongs to EXCHANGE SERVER's MAC (AA-BB-CC-DD-85-19)

Any ideas ?

Thanks,

- Chimmie