Quick Tip: Allowing FSRM to Send Email via Exchange

Last week, I was working on configuring File Server Resource Manager (FSRM) on Windows Server 2008R2 but I noticed I wasn't getting any emails. Luckily there's a built-in "Send Test Email" button but it thru a less than helpful error:

Error Message

To find more details, I opened up the event viewer to see these details:

Error: IFsrmEmailExternal::SendMail, 0x8004531c, Mailbox unavailable. The server response was: 5.7.1 Client does not have permissions to