I am in the process of a domain migration and am running into a common issue in that my meeting requests for a room are marked tentative and no auto response is sent to trusted domain.
I have configured a receive connector to externally secured with exchange server permissions and the issue persists. If I look in the tenative room mailbox I see my meeting request processed and moved to the deleted items folder but no response is sent.
All users from trusted domain have contacts setup on the exchange 2010 that houses the resource mailbox.My
room is set to processexternalmeetingrequests.
If I go into the room mailbox and accept the meeting the auto reply comes through to my user in separate domain.
If I book the room with an email acct on the same domain the meeting is processed immediately.
Andre