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Anjello Mari Sabaricos's avatar
Anjello Mari Sabaricos
Copper Contributor
Aug 03, 2017

Outlook App(Android & IOS) Can't connect internally (Exchange 2016)

Build: Exchange 2016 Exchange Configuration: Internal only (OWA, ECP, ActiveSync, Outlook Anywhere, EWS) External only is SMTP (send/receive email)   Already downloaded the updated Outlook app,  ...
2016
admin
Exchange Server
outlook
VasilMichev's avatar
VasilMichev
MVP
Aug 03, 2017

Afaik for on-premises Exchange, the Outlook app still uses the server-based cache, which is currently still using AWS. There are plans to move it to O365 (the Outlook app for ExO already switched to using the "native" mailbox data), but that will still depend on you having external connectivity. Anyway, TonyRedmond should know more.

  • Anjello Mari Sabaricos's avatar
    Anjello Mari Sabaricos
    Copper Contributor
    Aug 03, 2017
    Just want to know if we can use Outlook mobile apps internally? and there's other way around to use it only in internal connection.

    Thanks.
    • TonyRedmond's avatar
      TonyRedmond
      MVP
      Aug 03, 2017

      In either case (using the old AWS framework or the new one based on Azure - https://www.petri.com/outlook-ios-android-dumping-aws-q3), the Outlook clients need to be able to contact the service that hosts the cache of mailbox data used by the clients for features like the Focused Inbox. As both AWS and Azure are external to your network, the clients need that connectivity.

       

      I have not seen an announcement from Microsoft to say that on-premises Exchange now uses Azure. It might be the case that this will come at Ignite.

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