This article describes the steps involved in reinstalling Edge Transport Server role in Microsoft Exchange Server Standard Edition 2007 on Windows Essential Business Server Security Server. During this period, Internet mail flow will be down as the Edge Server is responsible for sending and receiving mails to and from Internet. Please forward mail traffic to alternate incoming mail gateway during this process to send and receive mails continuously. We will need to create a send connector with address space * and allow communication for port 25 from Security server to the Messaging server/

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