Let's say you want to view a user's mailbox in Exchange 2013. Here's the trick:
- -open browser
- -type: https://computername.domainname.tld/owa/ This e-mail address is being protected from spambots. You need JavaScript enabled to view it
This will get you into their mailbox. If you don't have permission, it will say, "You don't have permission to open this mailbox."
To fix this, you'll have to go into the powershell and type:
- Add-MailboxPermission foo.user -user foo.user2 -AccessRights FullAccess
You can view but you can't send mail as them. You have to go one step further:
- Add-ADPermission foo.user -user foo.user2 -ExtendedRights Send-As