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Exchange 2010 External Company GAL Sync

How can I sync the GAL of an external company to our Exchange 2010/Server 2008 AD environment? Is it possible to do without creating a forest trust between both companies?
1 Solution
VirastaRUC Tech Consultant Commented:

Here are some resources that will get you started will GalSync Federation based upon various scenarios

Scenario 1: Both organizations running Exchange 2010 SP1
Scenario 2: One (or both) organizations running a mix of both Exchange 2007 and Exchange 2010 SP1
Scenario 3: One (or both) organizations running a mix of Exchange 2003, Exchange 2007 and Exchange 2010 SP1

Cross Org Availability using Federation Trust and Organization Relationship

Additional Reference:
FIM 2010: Information about sharing GALs and Free/Busy Information between two Exchange Orgs

Hope that helps :)
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