This table is an expanded version of the one which was originally published in Chapter 13 in the book, Microsoft Office Administration Inside Out, 2nd Edition. Pearson Education, Inc. Depending on the your topology and configuration, you may still need to publish Autodiscover records in external DNS or open TCP Port 25 inbound and outbound to your Exchange environments for other reasons, such as Exchange Active Sync Clients using the legacy mail client in Android or iOS although we highly recommend Microsoft Outlook for iOS and Android as the mobile messaging application.
Make sure to review the limitations of the hybrid agent and modern hybrid topology covered in the article Microsoft Hybrid Agent. The additional steps needed to complete the process for Hybrid Modern Authentication are located here. You may also leave feedback directly on GitHub. Skip to main content. Exit focus mode. Note This table is an expanded version of the one which was originally published in Chapter 13 in the book, Microsoft Office Administration Inside Out, 2nd Edition.
Note Depending on the your topology and configuration, you may still need to publish Autodiscover records in external DNS or open TCP Port 25 inbound and outbound to your Exchange environments for other reasons, such as Exchange Active Sync Clients using the legacy mail client in Android or iOS although we highly recommend Microsoft Outlook for iOS and Android as the mobile messaging application.
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There are no open issues. View on GitHub.Modern Authentication is a method of identity management that offers more secure user authentication and authorization. It's available for Office hybrid deployments of Skype for Business server on-premises and Exchange server on-premises, as well as, split-domain Skype for Business hybrids.
Outlook and Skype clients information. Modern authentication is an umbrella term for a combination of authentication and authorization methods between a client for example, your laptop or your phone and a server, as well as some security measures that rely on access policies that you may already be familiar with. It includes:. Be aware that because Skype for Business works closely with Exchange, the login behavior Skype for Business client users will see will be affected by the modern authentication status of Exchange.
This will also apply if you have a Skype for Business split-domain hybrid architecture, in which you have both Skype for Business Online and Skype for Business on-premises, with users homed in both locations.
As of August ofall new Office tenants that include Skype for Business online and Exchange online will have modern authentication enabled by default. Pre-existing tenants won't have a change in their default MA state, but all new tenants automatically support the expanded set of identity features you see listed above. To check your MA status, see the Check the modern authentication status of your on-premises environment section.
When using modern authentication with on-premises Skype for Business or Exchange server, you're still authenticating users on-premises, but the story of authorizing their access to resources like files or emails changes. The change to evoSTS allows your on-premises servers to take advantage of OAuth token issuance for authorizing your clients, and also lets your on-premises use security methods common in the cloud like Multi-factor Authentication.
Additionally, the evoSTS issues tokens that allow users to request access to resources without supplying their password as part of the request. No matter where your users are homed of online or on-premisesand no matter which location hosts the needed resource, EvoSTS will become the core of authorizing users and clients once modern authentication is configured.
Hybrid Configuration Wizard options
ADAL is a code library designed to make secured resources in your directory available to client applications using OAuth security tokens. ADAL works with OAuth to verify claims and to exchange tokens rather than passwordsto grant a user access to a resource.
In the past, the authority in a transaction like this one -- the server that knows how to validate user claims and issue the needed tokens -- might have been a Security Token Service on-premises, or even Active Directory Federation Services.
This also means that even though your Exchange server and Skype for Business environments may be entirely on-premises, the authorizing server will be online, and your on-premises environment must have the ability to create and maintain a connection to your Office subscription in the Cloud and the Azure Active Directory instance that your subscription uses as its directory. What doesn't change? Whether you're in a split-domain hybrid or using Skype for Business and Exchange server on-premises, all users must first authenticate on-premises.
In a hybrid implementation of modern authentication, Lyncdiscovery and Autodiscovery both point to your on-premises server. If you need to know the specific Skype for Business topologies supported with MA, that's documented right here.
You can check the status on your Exchange servers by running the following PowerShell command:. If your Skype for Business front-end servers use a proxy server for Internet access, the proxy server IP and Port number used must be entered in the configuration section of the web. Your identity configurations are any of the types supported by AAD Connect such as password hash sync, pass-through authentication, on-premises STS supported by Officeet cetera.
You have verified that hybrid is configured using Exchange Classic Hybrid Topology mode between your on-premises and Office environment. Official support statement for Exchange hybrid says you must have either current CU or current CU - 1.
Hybrid modern authentication is not supported with the Hybrid Agent. Make sure both an on-premises test user, as well as a hybrid test user homed in Officecan login to the Skype for Business desktop client if you want to use modern authentication with Skype and Microsoft Outlook if you want to use modern authentication with Exchange.
You may also leave feedback directly on GitHub. Skip to main content. Exit focus mode. What is modern authentication? What changes when I use modern authentication? Check the modern authentication status of your on-premises environment Do you meet modern authentication prerequisites? What else do I need to know before I begin? Important As of August ofall new Office tenants that include Skype for Business online and Exchange online will have modern authentication enabled by default.Microsoft has announced the public preview of the Hybrid Agent.
Microsoft announced the public preview of the Hybrid Agent. If you plan to use the Hybrid Agent in your environment, you should understand that it does not provide the full functionality yet and currently supports the following scenarios:. However, compared to a Classic Hybrid implementation you will be missing the following cross-premises functionalities:.
So, there is no failover redundancy available when the server fails where the Hybrid Agent is installed on. If you decide to test the Hybrid Agent in your production environment, be mindful it is still a preview and has limited Microsoft support.
Make sure you test this thoroughly over a longer period of time before you make it available to your users. For more information about the Hybrid Agent click here. He has great expertise in Office implementations with a special focus on Security, Messaging and Identity for international customers. Thank you for this article.
Although one thing is unclear to me, I do not understand how SMTP traffic is handled between o and on-prem. Should I open 25 port or not? Which IP addresses should be added to whitelist? If you want a dedicated connector between your Exchange and Exchange Online, you need to open port 25 to your Exchange Server. Simple solution, use classic. Microsoft should stop releasing underdeveloped software.
I would be understanding your issue in more detail, can you Maybe send me additional details via e-mail? I gladly forward the information to my Microsoft contacts, to get an answer…. I heard if you do a hybrid migration and use ad sync — even after you move everyone over to the cloud if you continue to use AD Sync you have to keep the exchange server on prem or your users in the cloud with have mail issues with sharing, groups etc.
Has that been fixed? If you want to have any fallback methods at all if you want to take exchange on-prem again then at least 1 server is probably better than having to setup a new one. And it isnt the azure ad sync that is the issue, it is that azure ad cannot change most of the msexchange attributes and are read only while in the cloud. Besides — how do you handle all the email traffic from your internal servers without at least one on-prem exchange server?
Hybrid Agent & Exchange Modern Hybrid now available as a public preview
Last year I contacted MS for this issue.Microsoft just introduced the new Hybrid Agent Public Preview. This represents a small, but important, step toward making it easier for on-prem organizations to implement a hybrid configuration with Exchange Online. Exchange hybrid configurations allow customers to use the Mailbox Replication Service MRS to move mailboxes between Exchange on-premises and Exchange Online using the native tools built into Exchange.
When implemented properly, a hybrid environment allows on-prem and cloud users to have very similar client experiences even though they are essentially in two distinctly different environments.
Microsoft recognizes that some customers find it difficult to implement an Exchange hybrid environment since it usually requires firewall and network changes to allow the inbound connectivity required for MRS moves.
The newly introduced hybrid agent utilizes the same technology as Azure Application Proxy to make it easier for customers to move mailboxes.
First and foremost, the new Exchange hybrid agent only solves the issue of configuring inbound client access connections from Office Well over half of the work HCW does is to configure and secure mail flow, so this is important to understand. Since a single Exchange hybrid agent services inbound connections using an outbound connection, it cannot be load balanced. Some measure of fault tolerance can be achieved by installing additional hybrid agents on other Exchange servers, but this is not supported yet.
HMA is also required by the Outlook mobile app for the best experience and features. MailTips, message tracking and multi-mailbox search do not traverse the hybrid agent. These features are typically required by larger organizations. If you need these features during coexistence you should use the Classic Hybrid Topology. As mentioned, the new Modern Hybrid Topology is currently in preview.
The Hybrid Team is actively working on improving functionality to fill some of the gaps mentioned above. Eventually, the Modern Hybrid Topology is expected to be extended to allow multiple agents for redundancy and fault tolerance.
Hybrid allows on-premises organization and cloud organization work together like a single, seamless organization. This Active Directory object stores the hybrid configuration information for the hybrid deployment and is updated by the Hybrid Configuration wizard.
The Hybrid Configuration Engine discovers topology data and current configuration from the on-premises Exchange organization and the Exchange Online organization. Nowlet's look at steps involved in setting up Hybrid with my Exchange Sp1 server and Office Tenant. Choose Update to configure hybrid. It fire's the Hybrid engine and starts configuring in the back ground. Exchange Sp1 Hybrid now supports multiple Exchange Organizations configured against a single O tenant.
Exchange Forest contoso. Configure ADFS in contoso. You refer to part II blog to review common error's and troubleshooting path to fix Hybrid deployment Issues.Installing the Hybrid Agent Preview using the Hybrid Configuration Wizard
Skip to main content. Exit focus mode. Hybrid allows Secure mail routing between on-premises and Exchange Online organizations Administrators can use powerful and familiar Exchange management tools to move users to Exchange Online. MailTips, out-of-office messages, and similar features understand that Office and on-premises users are part of the same organization.
Delivery reports and multi-mailbox search work with users who are on-premises and those working in Exchange Online. Authentication headers are preserved during cross-premises mail flow. So, all mail looks and feels like it is internal to the company for example, recipient names resolve in the GAL.
With the help of Directory Synchronization you get Unified GAL If necessary, administrators can easily move mailboxes back to the on-premises Exchange environment Cloud-based message archiving for on-premises Exchange mailboxes Administrators do not have to manually reconfigure Outlook profiles or resynchronize.
Inherited non-explicit mailbox permissions such as permissions applied to the mailbox database and any permissions on non-mailbox objects such as distribution lists or a mail-enabled user are not migrated.In this blog post we will discuss hybrid migration endpoints in both Classic and Modern hybrid topologies, explain what migration endpoints are and how you can find them.
In Part 2 of this post now available we cover troubleshooting of any related issues. A Hybrid Migration endpoint is a term used interchangeably with Remote Move endpoint when referring to the source on-premises environment for Hybrid migrations to Exchange Online.
To choose one vs. With hybrid remote moves, we migrate all the data that is contained in the mailbox and we cannot skip any data like dumpster or junk folder. When moving mailboxes through migration batchesanother service called Migration Service is also involved.
It is an orchestration engine on top of MRS. Migration Service does not have an independent service running on the server, it is a part of Microsoft Exchange Service Host. This will create new migration user objects for each user identity from the migration batch that you can retrieve later with Get-MigrationUser and Get-MigrationUserStatistics cmdlets. As a note, hybrid migrations are the only ones where migration batches can be completed Complete-MigrationBatch.
Also, with Cutover migrations, you can have only one batch this will take all your on-premises Exchange recipients present in the GAL. For the rest of our native migrations, there is a batches limit. Below is a simplified image of what migration service in Exchange Online does when you start a migration:.
Knowing this background processes will help you troubleshoot your migrations more efficiently, see exactly where are you stuck at with your migration: if for example you see that a migration user is created in a hybrid migration but a corresponding move request is not created, then you could just try to inject the move request by yourself and see if it gives the same error message bypassing the Migration Service as a troubleshooting step.
Example of a cmdlet that will directly inject the onboarding move request in Exchange Online PowerShell, bypassing the migration endpoint settings or the Migration Service itself:.
Migration Service in Exchange Online stores information regarding your migration endpoints or migration batches in migration Arbitration mailboxes. Issues with this mailbox migration arbitration mailbox or the Migration Service in Office would affect your migration endpoints and migration batches. Hybrid migrations as well as the other native migrations are always initiated from O Exchange Online side in both onboarding migrate to Exchange Online and offboarding migrate from Exchange Online.
However, offboarding request back to on-premises Exchange are only natively possible with Hybrid Migrations.
These can be performed using migration batches or through separate move requests in PowerShell. The most common way is by using migration batches, typically from GUI. Now that you have an idea on the migration components involved, let us show you how we check the migration endpoints in Exchange Admin Center EAC and PowerShell. There are several migration endpoint types:. Below is an image that explains briefly these Migration Endpoints and their corresponding Migration types:.
To view existing or currently configured migration endpoints from PowerShell Exchange Onlineyou can run the following cmdlets:. With that, we are done with the migration endpoints overview. We will follow up soon with the troubleshooting part! Hi, my name is Mirela Buruiana and I am the main author of this blog.A hybrid deployment offers organizations the ability to extend the feature-rich experience and administrative control they have with their existing on-premises Microsoft Exchange organization to the cloud.
A hybrid deployment provides the seamless look and feel of a single Exchange organization between an on-premises Exchange organization and Exchange Online in Microsoft Office In addition, a hybrid deployment can serve as an intermediate step to moving completely to an Exchange Online organization.
Mail routing with a shared domain namespace. For example, both on-premises and Exchange Online organizations use the contoso. Centralized control of inbound and outbound mail flow. You can configure all inbound and outbound Exchange Online messages to be routed through the on-premises Exchange organization. The ability to move existing on-premises mailboxes to the Exchange Online organization. Exchange Online mailboxes can also be moved back to the on-premises organization if needed.
Message tracking, MailTips, and multi-mailbox search between on-premises and Exchange Online organizations. Cloud-based message archiving for on-premises Exchange mailboxes. Exchange Online Archiving can be used with a hybrid deployment. Hybrid deployment requirements : Before you configure a hybrid deployment, you need to make sure your on-premises organization meets all of the prerequisites required for a successful deployment.
For more information, see Hybrid deployment prerequisites. Exchange ActiveSync clients : When you move a mailbox from your on-premises Exchange organization to Exchange Online, all of the clients that access the mailbox need to be updated to use Exchange Online; this includes Exchange ActiveSync devices. Most Exchange ActiveSync clients will now be automatically reconfigured when the mailbox is moved to Exchange Online, however some older devices might not update correctly. For more information, see Exchange ActiveSync device settings with Exchange hybrid deployments.
Mailbox permissions migration : On-premises mailbox permissions such as Send As, Full Access, Send on Behalf, and folder permissions, that are explicitly applied on the mailbox are migrated to Exchange Online. Inherited non-explicit mailbox permissions and permissions granted to objects that aren't mail enabled in Exchange Online are not migrated.
You should ensure all permissions are explicitly granted and all objects are mail enabled prior to migration. Therefore, you have to plan for configuring these permissions in Office if applicable for your organization. In the case of Send As permissions, if the user and the resource attempting to be sent as aren't moved at the same time, you'll need to explicitly add the Send As permission in Exchange Online using the Add-RecipientPermission cmdlet.
Support for cross-premises mailbox permissions : Exchange hybrid deployments support the use of the Full Access and Send on Behalf Of permissions between mailboxes located in an on-premises Exchange organization and mailboxes located in Office Additional steps are required for Send As permissions.
Also, some additional configuration may be required to support cross-premises mailbox permissions depending on the version of Exchange installed in your on-premises organization. For more information, see Delegate mailbox permissions in Permissions in Exchange hybrid deployments and Configure Exchange to support delegated mailbox permissions in a hybrid deployment.
Offboarding : As part of ongoing recipient management, you might have to move Exchange Online mailboxes back to your on-premises environment. For more information about how to move mailboxes in an Exchange based hybrid deployment, see Move an Exchange Online mailbox to the on-premises organization. For more information about how to move mailboxes in hybrid deployments based on Exchange or newer, see Move mailboxes between on-premises and Exchange Online organizations in hybrid deployments.
Exchange servers : At least one Exchange server needs to be configured in your on-premises organization if you want to configure a hybrid deployment. If you're running Exchange or older, you need to install at least one server running the Mailbox and Client Access roles.
If you're running Exchange or newer, at least one server running the Mailbox role needs to be installed. If needed, Exchange Edge Transport servers can also be installed in a perimeter network and support secure mail flow with Office We don't support the installation of Exchange servers running the Mailbox or Client Access server roles in a perimeter network.
Microsoft Office : The Office service includes an Exchange Online organization as a part of its subscription service.