123 Reg to Office 365 migration

User Query

Based on the ongoing discussions, it is clear that Office 365 is popular with the masses, but when the term cloud migration is mentioned, it appears too complex to comprehend and causes fear in many people. Users migrating to Office 365 frequently inquire about how to keep their domain name from their previous provider with Microsoft. To answer all of the above questions, we'd like to go over two methods for migrating 123 Reg to Office 365.

" We purchased a web host and email together from 123 Reg and now want to migrate only our email to Office 365 while retaining the web host. We also have the requirement that the email domain remain 123 Reg while receiving emails in our Office 365 account. In other words, how do we keep the same email domain name as 123 Reg email? Thank you for any input."

I. How to plan migration from 123 Reg?

Before you begin migrating 123 Reg to Office 365, you must first create a detailed plan outlining how you intend to carry out the operation. Ensure that you have taken care of the following items in the checklist

• Determine and make a complete inventory of the items you want to migrate.
• Make sure you have administrator access to both the source and the target.
• Inform your users about the change ahead of time and ask them to back up their data.
• Keep the 123 Reg IMAP server connection details handy.
• Prepare a CSV file with a list of user mailboxes to migrate and verify the format.
• Add your existing email to Outlook and create a PST backup file of all your emails.
• Perform a test migration to ensure that everything works as expected.

II. Pre migration activities for 123 Reg to Office 365 migration

1. Make sure you have admin access on the source and target serverThe admin account that has all the necessary permissions to migrate mailboxes on behalf of all the users in your organization. Assign the global administrator rights to the user on the source server. Also assign the Organization Management role group and impersonation rights to the admin user on Office 365.
2. Purchase a suitable Office 365 licensing plan. You can also sign up for a 30 day free trial and decide to go with a suitable one later. Compare Office 365 business plans and compare Office 365 enterprise plans
3. Create Office 365 mailboxes and assign licenses to them

     Add users and assign licenses to Office 365 users

     Assign Microsoft 365 licenses to user accounts

4. If you plan to migrate your mailboxes to Office 365 Public folders, ensure that you create and configure the Public folder mailboxes on the target server.

     Create Office 365 Public folder and assign mailbox user

5. Similarly, if you want to migrate mailboxes to Office 365 In-Place archive, enable them from the admin center.

     Steps to enable archive mailbox in Microsoft 365.

6. If you have a custom email domain from the source which you want to retain and receive emails to, you must add and verify the domain on Office 365.

     Steps to add a custom domain to Office 365 and steps to add DNS records to connect your domain

   .
7. Configure Office 365 to send and receive large messages.

     Follow the steps to increase the message size on Office 365 to 150MB. See message size limits on Office 365 for more information.

II. How to migrate emails from 123 Reg to Office 365?

You can perform the migration with the following two methods.

• Migrate 123 Reg to Office 365 from the Exchange admin center (EAC)
• Migrate mailboxes to Office 365 with EdbMails IMAP migration method

Steps to migrate 123 Reg to Office 365 from EAC

• Step 1: Log in to your Office 365 tenant as a global administrator
• Step 2: Create Office 365 users and assign licenses
• Step 3: Verify and add your 123 Reg domain to Microsoft 365
• Step 4: Using the IMAP server details, create a migration endpoint
• Step 5: Upload and validate the CSV file from the Exchange admin center
• Step 6: Create a migration batch using the .CSV and start the migration

There are a few things to remember when you perform the migration with this method. Ensure that the CSV file containing the user's mailbox details is in the proper format. If you intend to purchase a Microsoft 365 license later, assign a trial license to the user mailboxes and perform a pilot migration first. However, the migration method from EAC is time consuming and involves elaborate steps that may take longer than the migration operation itself.

EdbMails IMAP migration tool can transfer mailbox data from 123 Reg to O365. The application has the advantage of having a graphical user interface from which you connect your source and target mailboxes and execute the operation. EdbMails also comes with a built-in include and exclude migration filter for selecting specific items or folders based on various rules and conditions.

Download EdbMails and install the application on any computer that is connected to the source and target environment. You can also perform the migration operation by installing EdbMails on a non-Exchange computer.

  See a detailed list of EdbMails system requirements for IMAP migration.

Launch the application and click ‘Login’ or ‘Start Your Free Trial’

Login to the application (if you have purchased a license and already have the username and password). The free trial version allows you to migrate 30 items from every folder of the source account to the target.

Select the migration method as ‘IMAP migration’ in the main window

• Step 1: Get the 123 Reg IMAP server details and enter them in EdbMails

  You must get these details from your 123 Reg server and enter them in the EdbMails IMAP connection screen.

  • Host Name for 123 Reg mail : imap.123-reg.co.uk
  • Port: 993 with SSL/TLS option (Secure IMAP connection)

  Enter your account credentials and password to connect to your 123 Reg mail account. EdbMails is a highly secure application that never saves your credentials and also supports modern OAuth 2.0 authentication for Office 365 login.

  

  If you want to migrate multiple mailboxes, select ‘Multiple (bulk) Users/Accounts Migration’. Download the sample CSV file from EdbMails and fill in the required details such as mailbox name, password, host name and port. Load the CSV file into the application and verify the list mailboxes to continue.

    See steps to connect to single and multiple users in EdbMails IMAP migration

  

• Step 2: Select the mailboxes from 123 Reg and connect to Office 365

  Following a successful connection, EdbMails loads all of your mailboxes, folders, and items, which you can access on the left side.

  • Select the mailboxes and folders to migrate.
  • Click ‘Migrate to Office 365’ to set up the connection with the target server.

      See tips to optimize IMAP migration to Exchange online

  

  Tip: If this is the first time you’re migrating with EdbMails, the migration is a full migration. On subsequent migrations from the same source to the target, the migration is incremental to prevent duplicate items.

  EdbMails provides the following additional options to help you customize the migration task.

  • Additional Include and Exclude Filter Options
  • Filter emails by Date: Migrate to Office 365 by applying the Date filter
  • Filter emails by Size: Exclude emails from migration larger than a specified size.

• Step 3: Connect to target Office 365 as Global Admin User

  EdbMails supports both modern and classic authentication. Connect to the target server by selecting Auto or Manual registration for modern authentication and the connection method as Mailboxes, Public folder or Archive Mailbox. You can also connect to the mailboxes by loading a CSV file of users from the Office 365 tenant.

  Connect to Office 365 server using secure modern authentication

• Step 4: Map the respective folders from the source to the target

  The mapping activity in EdbMails can automatically match and map the mailboxes and folders between 123 Reg and Office 365. This activity saves time when you’re migrating a large number of mailboxes.

• Step 5: Start the 123 Reg migration to Office 365 and verify the operation

  Start and monitor the migration operation after you complete the mailbox mapping. Finally, verify the count of migrated emails, folders and mailbox items with EdbMails text-based log report. You can also pause and resume the migration.

    If you require further assistance, contact EdbMails 24x7 support. Try the free trial version today to start the migration!

IV. Post-migration tasks

Step 1: Update the MX records to point to Office 365

If you have not done this step previously, connect the domain at 123-reg.co.uk to Microsoft 365 to enable and receive email messages on the target Office 365 server with the same domain name. In addition to this setup, configure the Autodiscover record to allow Outlook to connect to the migrated mailboxes.

Step 2: Create a new Outlook profile for users in the new domain

Configure and recreate the Outlook profile for each user in your domain if Outlook has problems connecting to Office 365 mailboxes.

Migration troubleshooting

See the migration troubleshooting guide for possible solutions related to common errors. For more information on EdbMails IMAP migration, see frequently asked questions (FAQs)

To wrap things up

Migrating from 123 Reg to Office 365 should not be too difficult now that we've introduced you to the EdbMails application and gone over the steps in detail. Although the manual method of creating a migration batch is suitable for small mailboxes, it has complexities when attempting to migrate large amounts of data or if a quick migration is required. EdbMails has the advantage of allowing you to do everything from a single interface and migrate without data loss. If you require additional assistance or information about the migration, contact free customer service 24 hours a day, seven days a week.

• Videos - IMAP to Office 365 migration
• Videos - IMAP to Exchange migration
• Videos - Office 365 to Office 365 migration