Need some more time to learn SOGo, make sure it works with Microsoft Outlook, Apple Mail.app, iOS devices.
There are three kinds of protocols:
- MAPI - This is native Microsoft Exchange protocol provided by Samba/Openchange package and it’s needed when using Outlook 2007,2010 (optionally 2013 too)
- RPC encapsulated in HTTP - This is native Microsoft Exchange protocol used for “Outlook Anywhere” provided by (currently missing) openchange-rpcproxy package and it’s needed when using Outlook 2007 or 2010 (optionally 2013 too) from remote location over WAN
- EAS (exchange active sync) - This is a Microsoft proprietary protocol used for mobile devices (iOS, Android) to access MS Exchange services provided by sogo-activesync package. It is needed when using iPhone or Android devices. EAS support has been added to Outlook 2013 as well.
Outlook 2013 can use either MAPI, RPC or EAS it’s up to you. Due to complexity of samba/openchange most users will likely go for EAS if using Outlook 2013. This option is not available for older Outlook versions so openchange is the only way.
i will try EAS protocol first.