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Our receive connector is on our &quot;Exch2010 box&quot;. &nbsp;However, when I unplug our &quot;Exch2007 box&quot; no emails arrive and cannot see Exchange. On 2010 - Exchange Management Console, Mailbox, &quot;Exch2010 box&quot; Properties, System Settings, &quot;Domain controller servers being used by Exchange&quot; = &quot;Exch2007 box&quot;. &nbsp;How to I change this setting? &nbsp;I am guessing this is what I need in order to retire Exch2007 box.<br />
Note: Server2008R2 running Exchange 2010. &nbsp;Server 2008 Standard SP2 x64 running Exchange 2007 (old box to bin). &nbsp;All mailboxes have been moved to &quot;Exch2010 box&quot;. &nbsp;Also have similar issue at a client site &nbsp;but with same version of Exchange 2007 so would like to know what I have missed during migration. &nbsp;Both servers are DCs and are GC.
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Our receive connector is on our "Exch2010 box".  However, when I unplug our "Exch2007 box" no emails arrive and cannot see Exchange. On 2010 - Exchange Management Console, Mailbox, "Exch2010 box" Properties, System Settings, "Domain controller servers being used by Exchange" = "Exch2007 box".  How to I change this setting?  I am guessing this is what I need in order to retire Exch2007 box.
Note: Server2008R2 running Exchange 2010.  Server 2008 Standard SP2 x64 running Exchange 2007 (old box to bin).  All mailboxes have been moved to "Exch2010 box".  Also have similar issue at a client site  but with same version of Exchange 2007 so would like to know what I have missed during migration.  Both servers are DCs and are GC.

Microsoft Exchange 2007 to retire after 2010 is now live

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

Within Internet message handling services (MHS), a message transfer agent or mail transfer agent (MTA) or mail relay is software that transfers electronic mail messages from one computer to another using a client–server application architecture. A MTA implements both the client (sending) and server (receiving) portions of the Simple Mail Transfer Protocol (SMTP). The terms mail server, mail exchanger, and MX host may also refer to a computer performing the MTA function. The Domain Name System (DNS) associates a mail server to a domain with mail exchanger (MX) resource records containing the domain name of a host providing MTA services.