Because scripts or tools are acting directly against Active Directory which has little knowledge of Exchange you can create scripts that make changes that would not be valid if performed through the Exchange tooling. As Microsoft state — it is possible to examine everything Exchange does with regards to recipient management, but it is at your own risk.
However as time goes on, and the risk of running Exchange on-premises appears to increase — there may be a time when the Microsoft community of IT pros and Microsoft MVPs like myself weigh up the risks collectively and provide a solution. There should be no vendor worthy of respect that appears to be confused by a request to configure their software so that it can send email directly using Exchange Online.
Such applications should not need to use an on-premises mail server to relay outbound mail to or through Exchange Online in ; Exchange Online has been around for ten years.
That position is often one where you need to be able to accept unauthenticated, insecure SMTP messages and relay them either outbound through Exchange Online to your customers or to employee mailboxes. In that case, then the simplest option often is to continue to run several Exchange Servers, utilizing a copy of your existing relay receive connectors. What this needs to be depends somewhat on your organization, but should be guided by several principles:. The first option is to consider using Exchange Servers running the Edge Transport role.
This role can be installed without connecting to any local Active Directory domain on standalone servers within a perimeter network area like a DMZ. Edge Servers are supported in a Hybrid Deployment , but the model for a sans-Exchange future would mean this model was not applicable, as no Exchange Mailbox servers would exist to provide an EdgeSync relationship, and you would instead create Send and Receive connectors directly on each Edge Server. Exchange Server can run on Windows with reduced functionality and Windows Server Skip to main content.
Start your free trial. The Active Directory database stores information in three types of logical partitions that are described in the following sections:. Schema classes define all the types of objects that can be created and stored in Active Directory. Schema attributes define all the properties that can be used to describe the objects that are stored in Active Directory.
When you install the first Exchange server in the forest or run the Active Directory preparation process , the Active Directory preparation process adds many classes and attributes to the Active Directory schema. The classes that are added to the schema are used to create Exchange-specific objects for example, agents and connectors.
These attributes are used to configure the Exchange-specific objects and the mail-enabled users and groups. These attributes include properties, such as Outlook on the web formerly known as Outlook Web App settings.
Every domain controller and global catalog server in the forest contains a complete replica of the schema partition. For more information about schema modifications in Exchange, see Active Directory schema changes in Exchange Server.
The configuration partition stores information about the forest-wide configuration. This configuration information includes the configuration of Active Directory sites, Exchange global settings, transport settings, and mailbox policies. Each type of configuration information is stored in a container in the configuration partition.
Exchange configuration information is stored in a subfolder under the configuration partition's Services container. The type of information that's stored in this container includes:. Every domain controller and global catalog server in the forest contains a complete replica of the configuration partition.
The domain partition stores information in default containers and in organizational units that are created by the Active Directory administrator. These containers hold the domain-specific objects. Before you install Exchange Server or Exchange Server even if you have earlier versions of Exchange installed in your organization , you need to prepare your Active Directory forest and its domains for the new version of Exchange.
There are two ways to do this:. Let the Exchange Setup wizard do it for you : If you don't have a large Active Directory deployment, and you don't have a separate team that manages Active Directory, we recommend using the Setup wizard.
Your account needs to be a member of both the Schema Admins and Enterprise Admins security groups. For more information about how to use the Setup wizard, check out Install Exchange Mailbox servers using the Setup wizard. Follow the steps in this topic : If you have a large Active Directory deployment, or if a separate team manages Active Directory, this topic is for you. Following the steps in this topic gives you much more control over each stage of preparation, and who can do each step.
For example, Exchange administrators might not have the required permissions to extend the Active Directory schema. For details about what's happening when Active Directory is being prepared for Exchange, see What changes in Active Directory when Exchange is installed? Estimated time to complete: minutes or more not including Active Directory replication , depending on organization size and the number of child domains.
The computer that you use for these procedures needs to meet the system requirements for Exchange. Exchange : Exchange Network and directory servers. If your organization has multiple Active Directory domains, we recommend the following approach:. The computer that you use for all procedures in this topic requires access to Setup.
TIP] Having problems? Ask for help in the Exchange forums.
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