Quickly Retrieving Send-On-Behalf-Of Users

This morning, I needed to verify and provide a list of users with Send-On-Behalf-Of rights to a particular mailbox, and all the usual powershell methods showed the field, but ended with an ellipsis, so I couldn’t be certain that there weren’t more users than what I was seeing. I needed a quick way to view the complete list. After some playing around, I ended up with this nifty one-liner:

[PS]>foreach ($sender in (get-mailbox Mailbox2BeChecked).GrantSendOnBehalfTo) { $sender.tostring() }

This resulted in a nice, complete list of user DNs.

domain.local/Ireland/Users/IT/User1

domain.local/Ireland/Users/IT/User2

domain.local/Ireland/Users/IT/User3

domain.local/Ireland/Users/IT/User4