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I use SmarterMail Enterprise with the ActiveSync add-on. ActiveSync is working well on Android phones, iPhones, iPads and Outlook 2013, but now I have one customer who just started using Apple Mail.
When adding an account, we click on "Exchange" (just like on iPads) and then enter the email address and password. Autodiscover works well, since Apple Mail succesfully recognizes my SmarterMail server. However, Apple Mail throws an error "cannot connect to Exchange server". The same account is working on Outlook 2013, Android and iOS devices.
Does anyone have an idea what could be wrong and how we could fix this?