Our users browse to the OWA URL and get the mailbox of the currently logged on user, that's great. It's the way we set it up and want it.
However, we also have a requirement to enter credentials for alternative mailboxes. This won't work no matter what we'ved tried.
We've tried things like the following URL:
That gives us the logon page but then we get "The webpage cannot be found" after entering alternative credentials. Are there any other verbs that can be passed to logon.aspx or any other method to do this?