We just signed up for office 365 business open without hosted mail option.
We have on premises exchange server.
We pushed the settings like use RPC proxy, SSL, server name etc through office 2016 GPO.
It was working smoothly. But since the installation of office 365, I believe GPO is not working & outlook is not getting connected while travelling. Now one particular user is travelling & we realise it now. His iphone is connected with on premises exchange without VPN but Windows 10 PC with office 365 suite he can't get connected unless he connects through VPN.
some blogs links: https://serverfault.com/questions/755229/how-do-i-keep-on-running-office-365-business-premium-2013-when-the-office-2016-u
Please guide. Thanks in advance. :)