IceWarp to Office 365 migration

IceWarp to Office 365 migration plan

Planning is one of the most important steps before you begin migrating your data to Office 365. Prepare the environment and have a backup plan in place to avoid potential risks and data loss. Here is a checklist of points to consider before you migrate.

• Determine the size of the data and number of mailboxes you want to migrate.
• Make a list of all the data and permissions from IceWarp that you want to transfer.
• Create appropriate user mailboxes on Office 365 and assign licenses to them.
• Ensure you have enough network capacity and bandwidth to migrate.
• Communicate the migration plan and flow to your end users.

Pre migration activities for IceWarp to Office 365 migration

1. Find the IMAP server name of your IceWarp server. You can find this information from your server’s dashboard settings or by connecting your email system to Outlook.
2. Make a complete backup of all your users' data, configuration and messages on IceWarp.
3. Assign the Organization Management role group in Exchange online to the admin user.
4. Before you migrate to Office 365, ensure that you create mailboxes for your users in your organization and assign suitable licenses to them.

    Add users and assign licenses to Office 365 users

    Assign Microsoft 365 licenses to user accounts

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

    Create Office 365 Public folder and assign mailbox user

6. Ensure that the admin account on the target Office 365 server has the impersonation rights to migrate mailboxes and Public folders.
7. If you have a custom email domain from your hosting provider to which you want to migrate and receive emails, 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.

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

    Follow the steps to increase the message size on Office 365 to 150MB and see tips to optimize IMAP migration to Exchange online.

How to migrate IceWarp to Microsoft 365?

There are two methods to migrate IceWarp to Office 365:

1. Create a CSV file of your user mailboxes from the source server and migrate with an IMAP connection.
2. Migrate your mailboxes from an Outlook PST file to Office 365.

EdbMails IMAP migration application supports both the aforementioned methods and enables you to migrate directly from the source to the target.

Steps to migrate IceWarp to Office 365 by using IMAP method

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.

EdbMails provides the following additional options to help you customize the IceWarp to Office 365 migration task.

1. Step 1: Download and install EdbMails IMAP migration software setup
   • 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

     

   • Launch the application and click 'Login' or 'Start Your Free Trial'

     

   • Select the 'IMAP migration' option.

     

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

2. Step 2: Connect to a single user or multiple users mailbox on IceWarp
   • If you want to migrate a single user, enter the Host Name, Port Number (993 for SSL), and account credentials to connect to the IceWarp server as shown.

     

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

     

      Steps to connect to single and multiple users in EdbMails IMAP migration
3. Step 3: Select the mailboxes and connect to the Office 365 tenant
   • Select the mailboxes and folders from the left panel to migrate to Office 365
   • Click 'Migrate to Office 365' to set up the connection with the target server

     

   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.

   EdbMails provides the following additional options to help you customize the IceWarp to Office 365 migration task.

   1. Additional Include and Exclude Filter Options
   2. Filter emails by Date: Migrate to Office 365 by applying the Date filter
   3. Filter emails by Size: Exclude emails from migration larger than a specified size
4. Step 4: 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.

    Connect to Office 365 server using secure modern authentication

   

5. Step 5: Map the mailboxes between the source and the target

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

   

6. Step 6: Start the migration to Office 365 from IceWarp

   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.

Steps to migrate IceWarp to Office 365 by using PST migration

EdbMails can also assist you in migrating to Office 365, if you have mailboxes exported as PST files from the IceWarp server. Download and run EdbMails if it hasn't already been installed on your system. The following steps outline how to migrate PST files to Office 365.

1. Step 1: Select the migration method as Office 365 migration

   On the EdbMails migration selection popup, select the 'Office 365 migration' option.

2. Step 2: Add PST files in bulk to migrate to Office 365

   To add the PST files, close the 'Connect to Office 365 (Source)' connection window and click 'Migrate PST to Office 365' at the bottom.

   

3. 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.

    Connect to Office 365 server using secure modern authentication

4. Step 4: Map and migrate mailboxes and folders to Office 365

   The mapping activity in EdbMails can automatically match and map the mailboxes and folders from the PST file to Office 365. This activity saves time when you’re migrating a large number of mailboxes. After you complete the migration, verify the count of the migrated items, folders and mailboxes with the help of EdbMails log report.

    Learn more about EdbMails PST to Office 365 migration