Comment 54 for bug 207723

I went through just about every reference I could find about this, and eventually this worked for me;

Username: domain\username (not my email address, my username)
OWA URL: https://mobile.mycompany.co.za
Mailbox: USERNAME (ie - in CAPITALS)

I spent about 3 hours trying various things, so I might have missed something else that's required, but these are the changes that made it work for me, so if it helps someone, I say pielle gert!

(PS. I think the actual "viola" moment was removing the trailing "/" from the OWA URL, but that's just a hunch....)