We have a two-way forest Trust between 3 domains. We've configured the availability between the domains so that users can lookup free-busy (Calendar).
Domain A can lookup free-busy from domain B & C , Domain B can lookup A & C , Domain C can only lookup from B.
We also have a GALSYNC with FIM in place between the domains.
We've found following error in the logging:
Process Microsoft.Exchange.InfoWorker.Common.Delayed`1[System.String]: <>SMTP:testuser@blablacom failed. Exception returned is Microsoft.Exchange.InfoWorker.Common.Availability.AutoDiscoverFailedException: Exceeded the number of Autodiscover redirections for e-mail <>SMTP:firstname.lastname@example.org. The maximum allowed redirections are 3.
. Name of the server where exception originated: MAILSERVER. This event may occur when Availability Service cannot discover an Availability Service in the remote forest.
Any help appreciated!