Federation Trust – federation trust establishes a trust relationship between a Microsoft Exchange Server 2010 organization
Organization relationship – Federating Microsoft Exchange Server 2010 organization ,
Enables Exchange 2010 Organization to create a Relationship to an another Exchange 2010 Organization for the purpose of sharing calendar availability (free/busy) information.
Prerequisites for creating Organization relationship
Your Organization has to be federated
Making sure the destination Organization is federated
Get-federationinformation –DomainName “ExternalDomainName.com”
Once you confirm destination Organization is federated
Open Exchange Management Console
Organization Configuration -> Organizational Relationships -> New Organization Relationship
Type a friendly Name
“Enable this Organization Relationship” is Checked
“Enable free/busy information access” is checked
Choose free/busy access with time only.
Enter the External Organization domain Name which needs to have an Organizational relationship
And Choose New,
And Organization Relationship have been Created successfully.
You can use powershell Commands like
Test-OrganiztionRelationship to verify the organization relationship
Test-OrganizationRelationship -Identity Contoso.com -UserIdentity firstname.lastname@example.org -verbose
Contoso.com denotes the External Organization where we have relationship with
Careexchange.in is our Exchange Domain
Hope it is Useful
Thank you !