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Summary: Migrating from Lotus Notes to Exchange Online is a strategic move, but it requires a well-thought-out plan. This blog post outlines a comprehensive Lotus Notes to Exchange Online migration plan, emphasizing the importance of data backup, proper configuration of IMAP connectors, and synchronization of mailboxes. It also highlights the use of professional tools like Kernel Office 365 Migrator for HCL Notes when manual migration falls short. This plan ensures a smooth transition to the cloud-based collaboration environment of Exchange Online.

Facing challenges with the performance of HCL Notes, users are increasingly seeking reliable alternatives. Among these, Office 365, Microsoft’s robust cloud platform, has gained prominence. Office 365 offers a wide array of features and services, making it an attractive choice for businesses. This subscription-based online service includes Microsoft Office Suite, Skype for Business, OneDrive, SharePoint, and Exchange Server, providing a comprehensive and efficient environment for managing business data.

Manual Method for HCL Notes to Exchange Online Migration

HCL Notes administrators can utilize an IMAP connector to facilitate the migration of local NSF files. IMAP is a widely supported protocol that enables the sending and retrieval of email messages and attachments through any web browser. Most email clients, such as Gmail, Yahoo, and Outlook, support IMAP. Here’s how you can migrate your files from HCL Notes to Exchange Online:

Step 1: Create a Backup of Mailboxes

The administrator should securely back up IBM HCL Notes emails to prevent data loss in case the migration encounters issues. This backup also serves as a means to verify the data after the migration process is completed.

Step 2: Enable the TCP/IP Port

After creating a backup at a secure location, enable the TCP/IP port for all the HCL Notes users:

  • Now go to Domino Administrator in the IBM Notes.
  • Go to the Configuration tab.
  • Open the Server file.
  • Follow Ports >> Internet Ports >> Mail.
  • Go to TCP/IP port status and change the status to Enabled.
Step 3: Synchronize HCL Notes With Office 365

Once the TCP/IP port is enabled, the administrator can initiate the synchronization process to migrate HCL Notes mailboxes to Office 365. After successful synchronization, the mailboxes from HCL Notes can be migrated directly to Office 365.

So, this is the manual method to perform HCL Notes to Exchange Online migration.

Drawbacks of the Manual Method

Users have continuously criticized the performance of the manual method. Some of the most common issues are mentioned below here:

  • You can migrate a HCL Notes files with a maximum size of 1 GB only.
  • If there are any Firewall or Proxy settings in the system, then Notes Files will not be migrated.
  • IMAP connector does not migrate the Calendar and its entries. The administrator needs to migrate them manually.
  • If any user account is disabled, then they will not be migrated with the IMAP connector.
  • IMAP connector will migrate only the online items of HCL Notes.
Automated Method

If your attempts to migrate HCL Notes to Office 365 aren’t successful, consider using a professional tool designed for accessing NSF files from HCL Notes or Domino Server. One such tool is Kernel Office 365 Migrator for HCL Notes. This migration tool can access NSF files, provide previews, and facilitate migration to Office 365 by requesting the necessary credentials.

Major Advantages of Kernel Office 365 Migrator for Lotus Notes

  • Migration of Notes local NSF files, Domino Server, and SmartCloud Notes to Office 365 and Exchange Online
  • No limitations on file size or number of files for migration
  • Smart search of Notes servers for automatic addition as the source
  • Migration to single/multiple Office 365 mailboxes
  • Migration of impersonation rights to Office 365 mailboxes
  • Standard and wide support to all HCL Notes/Verse versions
  • A detailed preview of local NSF files mailboxes content
  • Flexibility in mailboxes mapping – automated and CSV file mapping
  • Quick filtering of large-sized content with integrated filters and options
  • User-friendly interface with smartly arranged features

Here is its step-by-step procedure to use the software:

  1. Run the software and click the button Add Local NSF File(s).
    Add local NSF file
  2. Browse the NSF files you want to migrate.
    Browse NSF file to Migrate
  3. Click the Migrate button and input the Office 365 credentials. Then click OK.
    Input Office 365 credentials
  4. Click Get Target Mailbox(es) List button.
    Get Target Mailbox(es) List
  5. Select any NSF file and click Mapping button to map it with any destination Office 365 account.
    Select NSF file to map with Office 365
  6. Select the destination Office 365 and click OK.
    Select Office 365 as a destination
  7. After mapping each NSF file with its respective destination Exchange Online mailbox (Office 365), click OK.
    Mapping NSF file with Exchange online done
  8. The ‘Set Filter’ wizard has multiple filtering options to remove the unwanted data to migrate. After applying filters click OK.
    Apply filter option
  9. Select the saving mode.
    Select the saving mode
  10. Migration starts. You can choose to click Stop button and stop the data from migration.
    Migration NSF to Exchange Online start


“When comparing the manual and automated methods, it becomes evident that Kernel Office 365 Migrator for Lotus Notes is a highly advanced solution for migrating IBM Lotus Notes emails to Office 365. This software can efficiently migrate an unlimited number of NSF files in a single cycle, delivering maximum speed and accuracy in the process.