We have Exchange 2007 configured as single server. We are moving from an in house spam filtering device to a hosted spam solution. The hosted spam solution will receive all mail externally and then in turn forward to our Exchange server/Network. I have created a new Receive Connector and added the IP of the internal network card on the firewall as allowed to relay. I have also set as anonymous access. When I test the setup by unchecking the Anonymous access on my Default Receive Connector and save all settings, mail flow stops. I need to know what the best steps are to configure a new receive connector for mail coming from my firewall and not have anonymous access enabled on the default Receive Connector. I don't want the server open for anyone to send from with the default connector.
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