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IP Allow List Properties sbs2008 and exchange 2007

I was setting up the IP Allow List Properties on a SBS2008 box with exchange 2007 under the hub transport Windows SBS internet receive connector. I added the approved addresses for the prespam filter and restarted the service. The strange thing is if I do not have the routers LAN address in the approved list emails do not flow to the server. In the past I have only had to add the external addresses. Does anyone have an idea why I need the routers lan address needs to be in the list? The router is setup with a simple port forward on port 25 to the server.
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fbetag
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fbetag
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Simon Butler (Sembee)ConsultantCommented:
That is a router issue. Rather than showing the true IP address of the source, it is showing itself. You don't normally have to put that configuration in. Check with the router supplier to see if there is an update available, or you have misconfigured the router.

Simon.
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