I am unable to give a user Send on Behalf permissions for a shared mailbox. The error says Couldnt find object "..." Please make sure that it was spelled correctly or specify a different object.
The object it is trying to find is of another user that was disabled long time ago. I tried to search about it and someone said to have a look at ADSIEdit. I dont know where to go on ADSIEdit and I need to be 100% before making any changes on the ADSIEdit. Please let me know if any of you have any ideas.