Redirecting all messages to another email address
From Outlook WebApp, select Options
From the Shortcuts to other things you can do Select Forward your mail using Inbox rules
Select New
Under When the message arrives, and: select [Apply to all messages]
Under Do the following: select Redirect the message to...
At the bottom of the Address Book window under Message recipients: enter the desired forwarding address in the To -> field
Click OK
Click Save
Please be aware that redirecting mail does not leave a copy in your InBox.