this is my first post so i hope i can descript the idea correctly.
SMC use for the pushing Notification GCM (Google Cloud Messaging) but it gives user that use more and more modificated Andriod Systems in the company that has no Google Services on board.
So no GCM is availible on the devices.
In the future a alternative push function without GCM and only based on SMC is the idea.
I hope Sophos can work on that to make SMC with full functionality attractiv for alternative OS for example lineAge OS.
Sophos already supports Baidu as alternative push gateway. Please check the system setup for the required configuration. This allows communication to devices with no GCM access.