Today I was informed that some employees are able to send from other users mailboxes. We're talking Send As, not Send on Behalf. I did some initial looking around and cannot find any obvious reason why. I enabled mailbox auditing with powershell and sent an email to myself with the users mailbox in From field, auditing showed the following:
Operation : SendAs
OperationResult : Succeeded
LogonType : Delegate
I'm hoping someone can give me some pointers on how to track down what group or delegation is grating the Send As permission. I am fairly new in this organization and the Exchange platform was set up by people no longer working for the organization. We are currently running Exchange 2010 with latest SP.
All suggestions appreciated. In advance, thank you.
