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2. Click the Exchange Online and choose IMAP Migration
3. Create a CSV File
> Open a blank Excel File
> On the column header, place the ff:
> Save as .csv format
> Click the “ALLOW UNKNOWN COLUMNS IN THE CSV FILE”
> click NEXT
4. Setup the Server Settings
> Place the IMAP Server and port
Note: You can check some Server settings here:
If it is not there, you can check their Outlook settings or search it on google
> Authentication = Basic
> Encryption = depending on the server but most of the time SSL
> Click NEXT
5. Set-up Migration Batch
> Set Migration Batch Name
> Set Bad Item Limit – The BadItemLimit parameter specifies the maximum number of bad items that are allowed before the migration request fails. A bad itemis a corrupt item in the source mailbox that can’t be copied to the target mailbox. Also included in the bad item limit are missing items. Missing items are items in the source mailbox that can’t be found in the target mailbox when the migration request is ready to complete.
> Set Large Item Limit – The LargeItemLimit parameter specifies the maximum number of large items that are allowed before the migration request fails. A large item is a message in the source mailbox that exceeds the maximum message size that’s allowed in the target mailbox.
> Set ExcludeFolders – For an IMAP migration, the ExcludeFolders parameter specifies mailbox folders that you don’t want to migrate from the on-premises messaging system to the cloud-based mailboxes.
6. Start the batch
> Select the recipient of reports after the migration is finished.
> You can either select how you start the batch
You will receive a notification same as this once the migration started.
7. Check the details
> Click on the migration batch
> On the right panel, click the “View Details” to see the details of how many items are being synced, skipped of if the migration fails.
Should you have one, click here