[Migrated from MSDN Exchange Dev] Tenant A to Tenant B hybrid org relationship

Question

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[MSDN thread link] Tenant A to Tenant B hybrid org relationship

I'm sitting with a issue to setup calendar free/busy sharing between one o365 tenant and a another hybrid tenant.

Brief description:

Domain A is cloud only

Domain B is Hybrid (the free/busy between on-premise and the federated cloud is working).

I setup a org relationship from domain A to domain B (and then domain B is using Autodiscover to point to on-premise server). I also setup a trust between domain A and the domainB's .onmicrosoft domain.

The problem is:

Free busy from domain A to domain B is working only for mailboxes that are still on premise.

free busy for cloud mailboxes only work if I specify the domainB.mail.onmicrosoft.com address.

How can I setup sharing from Domain a, to domain B for both Onpremise and cloud based mailboxes.

I've heard talk that it is possible, but I cannot find anything on the net regarding this.

Answer 1

Hi,

This seems to be an expected behavior and this question has been recorded in o365 user voice here: Free/busy information not accesible from O365 tenant and Hybrid OnPrem/O365 tenant

And I also found some related threads discussed about the similar issue below:

Free/Busy O365 tenant with Hybrid O365 tennant -OrganizationRelationship

Free/Busy O365 tenant with Hybrid O365 tenant

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