Hi Jerzy,
I realize that you are not able to create a room mailbox via Exchange Control Panel. I would like to the following information for further research:
1. When does this issue begin to occur?
2. What’s your location?
Meanwhile, I have sent you a private message to collect the domain information. Please do the steps below:
• Go to the Your details section on the right side of the community site.
• Click Private messages.
• Click the subject title of the response to read the message.
• You can reply by using the form in this display.
• Click Submit Reply.
Thanks,
Mindy Pan
