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In Exchange 2003/2007, there is no system attendent mailbox. Try run Get-Mailbox -Arbitration to list of system mailbox.
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In Exchange 2003/2007, there is no system attendent mailbox. Try run Get-Mailbox -Arbitration to list of system mailbox.

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exchange 2003/2007 or exchange 2010/2007 ?
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exchange 2003/2007 or exchange 2010/2007 ?

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try below KB it might be hep you on this <br />
<br />
<a href="https://www.experts-exchange.com/questions/27930949/Exchange-2010-System-Attendant-mailbox.html" rel="ugc">https://www.experts-exchange.com/questions/27930949/Exchange-2010-System-Attendant-mailbox.html</a><br />
<br />
<a href="http://exchangeenthusiast.blogspot.in/2010/10/rehoming-system-attendant-sa-mailbox-on.html" rel="ugc">http://exchangeenthusiast.blogspot.in/2010/10/rehoming-system-attendant-sa-mailbox-on.html</a>
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try below KB it might be hep you on this

https://www.experts-exchange.com/questions/27930949/Exchange-2010-System-Attendant-mailbox.html [https://www.experts-exchange.com/questions/27930949/Exchange-2010-System-Attendant-mailbox.html]

http://exchangeenthusiast.blogspot.in/2010/10/rehoming-system-attendant-sa-mailbox-on.html [http://exchangeenthusiast.blogspot.in/2010/10/rehoming-system-attendant-sa-mailbox-on.html]

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Please see this blog <a href="https://exchangeshare.wordpress.com/2008/08/19/how-to-move-system-attendant-mailbox-exchange-2003/" rel="ugc">https://exchangeshare.wordpress.com/2008/08/19/how-to-move-system-attendant-mailbox-exchange-2003/</a>
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Please see this blog https://exchangeshare.wordpress.com/2008/08/19/how-to-move-system-attendant-mailbox-exchange-2003/ [https://exchangeshare.wordpress.com/2008/08/19/how-to-move-system-attendant-mailbox-exchange-2003/]

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Hi All, <br />
<br />
i am migrating exchange 2003 to exchange 2010. Just want to know in exchange 2003 there is System Attendant mailbox. Should i move that mailbox to exchange 2010 Server ? <br />
<br />
But i cant find how can i move it ?
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Hi All, 

i am migrating exchange 2003 to exchange 2010. Just want to know in exchange 2003 there is System Attendant mailbox. Should i move that mailbox to exchange 2010 Server ? 

But i cant find how can i move it ?

Exchange 2003 to exchange 2010 Migration System Attendant mailbox

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.

Email Servers

Microsoft server applications are those applications developed specifically, but not necessarily exclusively, on the Windows Server platform. In addition to well-known products like SQL Server, Exchange, Internet Information Services (IIS), Microsoft Dynamics, Forefront, Lync and Sharepoint, they include applications like Skype, BizTalk, Hyper-V, Groove and Commerce Server. Server applications are managed with the Microsoft System Center.