Trumbull Corporation
Seamless Migration from HCL Domino to Microsoft 365 with BCC
Migrating from a legacy email system to a modern cloud-based platform is a critical step for businesses looking to enhance efficiency and collaboration. Trumbull Corporation, a USA-based heavy highway construction company, faced significant challenges in their transition from HCL Domino to Microsoft 365.

ABOUT THE CUSTOMER
Trumbull Corporation – Heavy Highway Construction Across the USA
Trumbull Corporation is a USA-based heavy highway construction company operating across multiple domains. Like many organizations, they relied on HCL Domino as their core email and collaboration platform for years. As part of a modernization initiative, the company undertook a migration to Microsoft 365 to benefit from cloud-based productivity and enhanced collaboration tools.
CHALLENGE & BACKGROUND
Failed Migration, Missing Calendars – and a Search for a Reliable Solution
Trumbull Corporation initially attempted the migration using a different tool, but significant issues emerged. Critical calendar entries failed to migrate correctly, posing serious operational risks. Email structures in Microsoft 365 did not match their original layout in Domino, leaving users frustrated and productivity at risk.
| PROBLEMS BEFORE | REQUIREMENTS FOR THE SOLUTION |
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THE SOLUTION
BCC Migration Engine: Accuracy, Flexibility and Expert Knowledge Transfer
After reaching out to BCC, Trumbull Corporation requested a trial migration using BCC's Migration-as-a-Service (MaaS). The results were immediate and decisive: all previously missing calendar entries were correctly migrated, and email structures in Exchange precisely mirrored their original form in Domino.
Encouraged by the trial, Trumbull Corporation made the strategic decision to fully transition to BCC's Migration Engine, opting for an on-premises installation. This gave the internal IT team full control over the migration process while benefiting from BCC's deep expertise.
BCC provided comprehensive training and knowledge transfer sessions, equipping Trumbull's IT team to conduct migrations independently. Despite the time zone gap between the USA (EST) and BCC (CET), the collaboration was seamless and disruption-free throughout.
"If you are planning to migrate away from HCL Notes, the only tool you should consider is Migration Engine from BCC."
Terri O'Mahony · IS Analyst, Trumbull Corporation
RESULTS & VALUE
Three Domains Migrated – Seamlessly, Accurately, Successfully
Trumbull Corporation successfully migrated three domains of users to Microsoft 365 using BCC's Migration Engine. The process was characterized by high accuracy, a seamless user experience, and superior support from the BCC team. All calendar entries were correctly transferred, and email structures were preserved exactly as they existed in the original Domino environment.
NEXT STEPS
A Trusted Partnership for Future Migrations
With the successful completion of the three-domain migration, Trumbull Corporation has established a proven, repeatable process using BCC's Migration Engine. The knowledge transfer sessions ensure the internal IT team can handle future migration needs independently, with BCC available as a trusted expert partner whenever needed.
Trumbull Corporation's experience serves as a blueprint for any organization considering a move from HCL Domino to Microsoft 365 – demonstrating that with the right tool and the right partner, even complex, multi-domain migrations can be executed seamlessly.
CUSTOMER PROFILE
| ORGANISATION | Trumbull Corporation |
| INDUSTRY | Heavy Highway Construction |
| HEADQUATERS | USA |
| PLATFORM | Microsoft 365 |
| SOLUTION | BCC Migration Engine / Migration-as-a-Service (MaaS) |
| DOMAINS MIGRATED | 3 |
