Have you tried it with Global Reader role? My Exchange admin doesn't want to give Exchange Administrator privileges and I am not able to get past this error 403 with Global Reader. I am wondering if anyone has had any luck in getting this to work?     From Splunk Employee on another related post: "jconger Splunk Employee a month ago Update: the originally required permissions were either Global Administrator or Exchange Administrator.  However, Microsoft has changed that to now allow the Global Reader role." ... View more