Re: I can't configure my MsExchange corporative mail?
The support article (Add email accounts) doesn't mention ActiveSync. If you tap "Manual setup" what options do you get there?
Note: I read on a discussion on the web somewhere that Firefox OS does not yet support some of the security policies that usually are required by Exchange. I searched briefly in Bugzilla, but didn't find a relevant bug for that so I'm not sure of the status.