Removing my POP config and replacing with OWA resolved my issue. My account was setup as POP by default after entering my email address and password. I couldn't just change my POP config to OWA. I had to remove the POP config on the storm and create a new config by entering a fake email and password to allow the setup to get to the other options. Once I did this, I selected business, entered the OWA URL and other info including mailbox name which I found in OWA.