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<blockquote>
 already built a connection with MFG and organization relationships with my partner. 
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How did you build that?
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> already built a connection with MFG and organization relationships with my partner.

How did you build that?

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No people really answer this question.
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I have a mixed Exchange environment with Exchange 2007 SP3 &amp;&nbsp;2010 CAS servers. For now, I already built a connection with MFG and organization relationships with my partner. <br />
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The issue is when I try to select specific several mailboxes in the sharing policies, there is no Exchange 2007 mailbox in the list.<br />
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From my research, the federated calendar sharing can support mixed Exchange Environment. I cannot figure out the root cause, please help.
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I have a mixed Exchange environment with Exchange 2007 SP3 & 2010 CAS servers. For now, I already built a connection with MFG and organization relationships with my partner. 

The issue is when I try to select specific several mailboxes in the sharing policies, there is no Exchange 2007 mailbox in the list.

From my research, the federated calendar sharing can support mixed Exchange Environment. I cannot figure out the root cause, please help.

Exchange 2007 &amp; Exchange 2010 mixed environment Federated Calendar Sharing Issue

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 2007 &amp; Exchange 2010 mixed environment Federated Calendar Sharing Issue

Exchange 2007 & Exchange 2010 mixed environment Federated Calendar Sharing Issue