Migrate email using the Cutover Migration Method

Exchange cutover method

As a feature of an Office 365 organization, you can move the substance of client letter drops from a source email framework to Office 365. When you do this all at one time, it’s known as a cutover movement. Picking a cutover relocation is proposed when:

Your current on-premises Exchange association is Microsoft Exchange Server 2003 or later.

Your on-premises Exchange association has less than 2,000 post boxes.


Despite the fact that cutover relocation bolsters climbing to 2000 letterboxes, because of the time span, it takes time to make and move 2000 clients, it is increasingly sensitive to move 150 clients or less.

Plan for relocation

Setting up an email cutover relocation to Office 365 requires cautious arranging. Before you start, here are a couple of interesting points:

You can move your whole email association to Office 365 over a couple of days and oversee client accounts in Office 365.

A limit of 2,000 letter drops can be relocated to Office 365 by utilizing a cutover Exchange movement. Be that as it may, it is suggested that you just move 150 post boxes.

The essential space name utilized for your on-premises Exchange association must be acknowledged as an area possessed by you in your Office 365 association.

After the movement is finished, every client who has an on-premises Exchange post box additionally will be another client in Office 365. In any case, regardless you’ll need to appoint licenses to clients whose letter drops are relocated.

Effect to clients

After your on-premises and Office 365 associations are set up for a cutover relocation, post-setup assignments could affect your clients.

Executives or clients must arrange PCs: Make beyond any doubt that personal computers are refreshed and set up for use with Office 365. These activities enable clients to utilize nearby client accreditations to sign in to Office 365 from work area applications. Clients with authorization to introduce applications can refresh and set up their own work areas. Or then again updates can be introduced for them. After updates are made, clients can send emails from Outlook 2013, Outlook 2010, or Outlook 2007.

Potential deferral in email steering: Email sent to on-premises clients whose letterboxes were relocated to Office 365 are directed to their on-premises Exchange post boxes until the MX record is changed.

How does Exchange cutover method work?

The fundamental advances for a Cutover Exchange Method appear in the accompanying representation.

The procedure for playing out a cutover email relocation to Office 365 is following:

The head imparts up-and-coming changes to clients and checks space proprietorship with the area enlistment center.

The Executive readies the servers for a cutover relocation and makes void mail-empowered security bunches in Office 365.

The chairman associates Office 365 to the on-premises email framework (this is called making a movement endpoint).

The director moves the post boxes and after that checks the relocation.

Allow Office 365 licenses to your clients.

The head designs the space to start steering email legitimately to Office 365.

The head checks that directing has changed, and after that erases the cutover movement bunch.

The head finishes post-relocation errands in Office 365 (allocates licenses to clients and makes an Autodiscover Domain Name System (DNS) record), and alternatively decommissions the on-premises Exchange servers.

The executive sends an appreciated letter to clients to inform them regarding Office 365 and to portray how to sign in to their new post boxes.

Prepared to run a cutover relocation?

Grow the segments underneath and pursue the means.

Get ready for a cutover movement

Before you relocate letter drops to Office 365 by utilizing a cutover movement, there are a couple of changes to your Exchange Server condition you should total first.


On the off chance that you have turned on catalog synchronization, you have to turn it off before you can play out a cutover movement. You can do this by utilizing PowerShell. For guidelines, see Turn off catalog synchronization for Office 365.

Design Outlook Anywhere on your on-premises Exchange Server: The email movement administration utilizes Outlook Anywhere (otherwise called RPC over HTTP), to associate with your on-premises Exchange Server. Viewpoint Anywhere is naturally designed for Exchange 2013. For data about how to set up Outlook Anywhere for Exchange 2010, Exchange 2007, and Exchange 2003, see the accompanying:

Trade 2010: Enable Outlook Anywhere

Trade 2007: How to Enable Outlook Anywhere

Step by step instructions to design Outlook Anywhere with Exchange 2003

You should utilize an authentication issued by a confided in confirmation specialist (CA) with your Outlook Anywhere setup all together for Office 365 to run a cutover relocation. For cutover relocation, you will include the Outlook Anywhere and Autodiscover administrations in your endorsement. For guidelines on the best way to set up authentications, see:

Add an SSL declaration to Exchange 2013

Add an SSL declaration to Exchange 2010

Add an SSL declaration to Exchange 2007

Discretionary: Verify that you can associate with your Exchange association utilizing Outlook Anywhere: Try one of the accompanying strategies to test your association settings.

Use Outlook from outside your corporate system to interface with your on-premises Exchange post box.

Utilize the Microsoft Exchange Remote Connectivity Analyzer to test your association settings. Utilize the Outlook Anywhere (RPC over HTTP) or Outlook Autodiscover tests.

Sit tight for the association with naturally be tried when you interface Office 365 to your email framework later in this strategy.

Set consents: The on-premises client account that you use to interface with your on-premises Exchange association (additionally called the movement director) must have the important authorizations to get to the on-premises letter drops that you need to move to Office 365. This client account is utilized when you interface Office 365 to your email framework later in this technique.

To move the letter drops, the administrator must have one of the accompanying authorizations:

The movement overseer must be allowed the FullAccess authorization for each on-premises letterbox.

or on the other hand

The movement overseer must be allowed the Receive As authorization on the on-premises letterbox database that stores client post boxes.

For guidelines about how to set these consents, see Assign Exchange authorizations to move letterboxes to Office 365.

Debilitate Unified Messaging (UM): If UM is turned on for the on-premises letterboxes you’re relocating, turn off UM before movement. Turn on UM or the letterboxes after movement is finished.

Make security gatherings and tidy up agents: Because the email movement administration can’t recognize whether on-premises Active Directory bunches are security gatherings, it can’t arrange any moved gatherings as security bunches in Office 365. In the event that you need to have security bunches in Office 365, you should initially arrange a vacant mail-empowered security bunch in Office 365 preceding beginning the cutover relocation.

Furthermore, this relocation strategy just moves letter boxes, mail clients, mail contacts, and mail-empowered gatherings. On the off chance that some other Active Directory object, for example, client letter drop that isn’t relocated to Office 365 is doled out as an administrator or representative to an item being moved, you should expel them from the article before relocation.

Stage 1: Verify you possess the area

Amid the movement, the Simple Mail Transfer Protocol (SMTP) address of each on-premises post box is utilized to make the email address for another Office 365 letterbox. To run a cutover movement, the on-premises area must be a checked space in your Office 365 association.

Sign in to Office 365 with your work or school account.

Pick Setup > Domains.

On the Domains page, click Add space to begin the area wizard.

Pick Add space

On the Add a space page, type in the area name (for instance, Contoso.com) you use for your on-premises Exchange association, and after that pick Next.

On the Verify space page, select either Sign in to GoDaddy (if your DNS records are overseen by GoDaddy) or Add a TXT record rather for some other enlistment centers > Next.

Adhere to the directions accommodated by your DNS facilitating supplier. The TXT record ordinarily is picked to check proprietorship.

You can likewise discover the directions in Create DNS records for Office 365 when you deal with your DNS records.

After you include your TXT or MX record, hold up around 15 minutes before continuing to the following stage.

In the Office 365 space wizard, pick done, confirm now, and you’ll see a check page. Pick Finish.

On the off chance that the check falls flat at first, hold up for a spell, and attempt once more.

Try not to proceed to the subsequent stage in the area wizard. You currently have checked that you claim the on-premises Exchange association area and are prepared to proceed with an email movement.

Stage 2: Connect Office 365 to your email framework

A relocation endpoint contains the settings and qualifications expected to associate the on-premises server that has the letter drops you’re moving with Office 365. The relocation endpoint likewise characterizes the quantity of letter drops to move at the same time. For a cutover relocation, you’ll make an Outlook Anywhere movement endpoint.

Go to the Exchange administrator focus.

In the Exchange administrator focus, go to Recipients > Migration.

Pick More symbol > Migration endpoints.

Select Migration endpoint.

On the Migration endpoints page, pick the New symbol.

On the Select the relocation endpoint type page, pick Outlook Anywhere > Next.

On the Enter on-premises account qualifications page, enter data in the accompanying boxes:

Email address: Type the email address of any client in the on-premises Exchange association that will be relocated. Office 365 will test the network to this current client’s letter drop.

Record with benefits: Type the username (domain\username design or an email address) for a record that has the fundamental authoritative authorizations in the on-premises association. Office 365 will utilize this record to distinguish the movement endpoint and to test the

About the Author Ronan Keane

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