This is one of the most requested features in an Exchange hybrid scenario (i.e. Exchange Online combined with Exchange on-premises) and as of early February 2016 it is finally officially supported: Cross premises Full Access Permissions.
This means that if you have a manager’s Mailbox on-premises, and an assistant Mailbox in Exchange Online, the assistant can open the manager’s Mailbox. This works both ways, so if the manager’s Mailbox is in Exchange Online and the assistant’s Mailbox is in Exchange on-premises the results are the same.
There are some caveats however:
- This only works when Full Access permissions are granted, and this is achieved using the Exchange Admin Center or Exchange Management Shell in Exchange Online.
- Send-As, Receive-As and Send-on-behalf-of permissions are not supported cross-premises.
- Your Outlook 2013 should be patched with at least the November 2015 update.
- The first time users open a Mailbox in the other organization they might see a credentials pop-up
The people picker in in the EAC in Exchange Online supports adding Mail-Enabled Users (MEU) and regular Mailboxes, so you can use EAC in Exchange Online to add cross-premises permissions. The EAC in Exchange 2013/2016 on-premises only supports adding Mailboxes, so the online version of EAC need to be used.
More information can be found on the following Microsoft articles:
In my previous blog post I explained about an Exchange 2013 hybrid configuration, and what the prerequisites are for such a configuration and how to implement and configure one (or more) Exchange 2013 Hybrid servers.
In this blog post we’ll continue with the Hybrid Configuration and we will run the Hybrid Configuration Wizard (HCW) to actually create the Exchange 2013 Hybrid configuration.
Note. For simplicity I assume your Exchange 2013 is fully operational without any (certificate) issues on the Internet, which means you have configured all your Virtual Directories, Outlook Anywhere and Autodiscover. Everything must be working correctly to prevent any issues during configuration, possibly resulting in a misconfigured and not working hybrid configuration.
Run the Hybrid Configuration Wizard
Configuring Exchange 2013 is relatively easy and can be started from the Exchange Admin Center (EAC). The wizard that’s used here is known as the Hybrid Configuration Wizard (HCW) and in my experience a very stable (although there have been some glitches with the HCW in earlier CU’s of Exchange 2013) and efficient wizard, providing you have met all prerequisites of course.
Login to the Exchange 2013 Hybrid server and start the Exchange Admin Center locally. The reason for doing this locally on the server is that during the wizard some additional software needs to be installed for the OAuth part of the Hybrid configuration.
In the Exchange Admin Center in the navigation pane select hybrid. In the hybrid setup window click the enable button to initially enable the hybrid mode in your organization. The option My Office 365 organzation is hosted by 21Vianet should be left unchecked. Office 365 in China is hosted by 21Vianet so this option does not apply to us (unless you are in China and your organization is hosted by 21Vianet of course).
Continue reading Exchange 2013 Hybrid Configuration Wizard (Part II)
Edited: November 11, 2015
In a hybrid environment the on-premises Exchange organization (which can be either Exchange 2010 or Exchange 2013) is integrated with Exchange Online. In a hybrid configuration you basically create one ‘virtual’ Exchange organization with the following features:
- One cross-premises Address Book;
- Secure cross-premises mail flow;
- Cross-premises Free/Busy information, mail tips and out-of-office features;
- Seamless migration to Exchange Online and vice versa;
- No recreation of OST file;
- Automatic reconfiguration of Outlook profile;
- OWA URL Redirect.
To create a Hybrid environment you need at least one Exchange hybrid server on-premises. This can be an Exchange 2010 server but I always recommend using an Exchange 2013 server for this because of the improved hybrid connectivity in Exchange 2013. For redundancy purposes (and performance for larger environments) you better use multiple Exchange 2013 Hybrid servers.
Another prerequisite for creating a Hybrid environment is that you must have Directory Synchronization in place, so DirSync is used for synchronization user accounts, groups and contacts, all other communication is handled by the Exchange 2013 hybrid servers as shown in the following picture:
Continue reading Exchange 2013 Hybrid Prerequisites (Part I)