How to configure Outlook Anywhere with Exchange 2003 For information about how to set up Outlook Anywhere for Exchange 2010, Exchange 2007, and Exchange 2003, see the following:Įxchange 2007: How to Enable Outlook Anywhere Outlook Anywhere is automatically configured for Exchange 2013. For instructions, see Turn off directory synchronization.Ĭonfigure Outlook Anywhere on your on-premises Exchange Server: The email migration service uses Outlook Anywhere (also known as RPC over HTTP), to connect to your on-premises Exchange Server. If you have turned on directory synchronization, you need to turn it off before you can perform a cutover migration. Prepare for a cutover migrationīefore you migrate mailboxes to Microsoft 365 or Office 365 by using a cutover migration, there are a few changes to your Exchange Server environment you must complete first. (See Overview of Outlook e-mail profile for information on creating new Outlook profiles).Įxpand the sections below and follow the steps. The administrator sends a welcome letter to users to tell them about Microsoft 365 or Office 365 and to describe how to sign in to their new mailboxes. The administrator completes post-migration tasks in Microsoft 365 or Office 365 (assigns licenses to users and creates an Autodiscover Domain Name System (DNS) record), and optionally decommissions the on-premises Exchange servers. The administrator verifies that routing has changed, and then deletes the cutover migration batch. The administrator configures the domain to begin routing email directly to Microsoft 365 or Office 365. Grant Microsoft 365 or Office 365 licenses to your users. The administrator migrates the mailboxes and then verifies the migration. The administrator connects Microsoft 365 or Office 365 to the on-premises email system (this is called creating a migration endpoint). The administrator prepares the servers for a cutover migration and creates empty mail-enabled security groups in Microsoft 365 or Office 365. The administrator communicates upcoming changes to users and verifies domain ownership with the domain registrar. The main steps you perform for a cutover migration are shown in the following illustration. Potential delay in email routing: Email sent to on-premises users whose mailboxes were migrated to Microsoft 365 or Office 365 are routed to their on-premises Exchange mailboxes until the MX record is changed. After updates are made, users can send email from Outlook 2013, Outlook 2010, or Outlook 2007. Users with permission to install applications can update and set up their own desktops. These actions allow users to use local user credentials to sign in to Microsoft 365 or Office 365 from desktop applications. When migrating from Exchange 2003, TCP port 6001, 60 need to be open on the Exchange 2003 side.Īfter your on-premises and Microsoft 365 or Office 365 organizations are set up for a cutover migration, post-setup tasks could impact your users.Īdministrators or users must configure desktop computers: Make sure that desktop computers are updated and set up for use with Microsoft 365 or Office 365. The primary domain name used for your on-premises Exchange organization must be an accepted as a domain owned by you in your Microsoft 365 or Office 365 organization.Īfter the migration is complete, each user who has an on-premises Exchange mailbox also will be a new user in Microsoft 365 or Office 365, but you must still assign licenses to users whose mailboxes are migrated. However, it's recommended that you only migrate 150 mailboxes. You can move your entire email organization to Microsoft 365 or Office 365 over a few days and manage user accounts in Microsoft 365 or Office 365.Ī maximum of 2,000 mailboxes can be migrated to Microsoft 365 or Office 365 by using a cutover Exchange migration. Before you begin, here are a few things to consider: Setting up an email cutover migration to Microsoft 365 or Office 365 requires careful planning. Even though cutover migration supports moving up to 2000 mailboxes, due to length of time it takes to create and migrate 2000 users, it is more reasonable to migrate 150 users or fewer.
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