Hi All,

We have exchange 2013 SP1 setup on premises , we have published exchange components through Web application proxy 2012 r2 .

We were successful in accessing mail from outlook in windows 10 desktop

we were successful in accessing the mail from browser in android mobiles

But , when we tried installing outlook app for android

when we added exchange account in outlook app, its not connecting to the exchange server and throws time out error ..

Since we are new to exchange , couldn't figure out how exactly outlook app for android device communicates with exchange ??

And , is it required to sync on premises ad users and password to azure online service to use outlook for mobile...

any suggestions will help..and any document on working of outlook app will do help

thanks,

kalai

The way I understand this works, the app contacts a cloud service, which talks to your on-premises mailbox using ActiveSync.  So your device must be able to talk to the cloud service, and the cloud service must be able to talk to your on-premises Exchange server via ActiveSync.