Overview
This project aims to integrate an on-premises Exchange 2016 environment with Exchange Online, creating a hybrid deployment that leverages the benefits of both environments. The integration will also include Mimecast for enhanced email security and compliance.
Objectives
- Seamlessly integrate On-Prem Exchange 2016 with Exchange Online.
- Ensure robust security and compliance through Mimecast integration.
- Facilitate efficient email management and communication.
- Enhance user experience with a unified email solution.
Prerequisites (Completed, Subject to Review)
- Azure AD Integration: Successfully integrated with Azure Active Directory.
- SharePoint Online: SharePoint Online setup and integrated with the existing environment.
Project Scope
Phase 1: Planning and Assessment
- Requirements Gathering: Document detailed requirements for the hybrid integration.
- Current Environment Assessment: Review the existing Exchange 2016 environment and Azure AD integration.
- Stakeholder Meetings: Conduct meetings with stakeholders to ensure alignment on project goals and timelines.
Phase 2: Design
- Hybrid Configuration Design: Develop a detailed design for the hybrid configuration between On-Prem Exchange 2016 and Exchange Online.
- Security and Compliance Design: Design integration points for Mimecast to ensure security and compliance.
- Backup and Recovery Plan: Develop a backup and recovery strategy for the hybrid environment.
Phase 3: Implementation
- Hybrid Configuration Wizard (HCW): Configure HCW for On-Prem Exchange 2016 and Office 365 Exchange Online.
- Setup Hybrid Configuration: Enable hybrid features like free/busy sharing, mailbox moves, and secure mail flow.
- DNS Configuration: Update DNS records for hybrid deployment.
- Mimecast Integration:
- Mimecast Sync: Configure synchronization between Mimecast, On-Prem Exchange, and Exchange Online.
- Policy Setup: Establish security policies and archiving settings in Mimecast.
Phase 4: Testing
- Functional Testing: Validate email flow between On-Prem Exchange and Exchange Online.
- Security Testing: Test Mimecast integration to ensure security policies are effective.
- User Acceptance Testing (UAT): Conduct UAT to gather feedback from a pilot group of users.
Phase 5: Migration and Rollout
- Pilot Migration: Migrate a small set of mailboxes to Exchange Online to validate the process.
- Full Migration: Execute the full migration plan, moving all necessary mailboxes to Exchange Online.
- User Training: Provide training sessions and documentation for end-users and administrators.
Phase 6: Post-Implementation Support
- Monitoring and Optimization: Monitor the hybrid environment and optimize performance as needed.
- Issue Resolution: Address any issues that arise during the post-implementation phase.
- Documentation: Finalize and hand over all project documentation, including configuration details and operational procedures.
Considerations
- Licensing Requirements: Ensure all necessary licenses for Exchange Online and Mimecast are in place.
- Network Bandwidth: Assess and upgrade network bandwidth if necessary to handle increased traffic.
- User Communication: Regular updates to users about the migration process and any expected downtime.
- Data Compliance: Ensure all data handling complies with organizational and regulatory requirements.
Project Timeline
The project is estimated to take approximately 6-8 months from planning to full rollout, depending on the complexity of the current environment and the scale of the migration.
Budget
A detailed budget will be developed during the planning phase, considering software licenses, hardware upgrades, professional services, and contingency reserves.
Risks and Mitigations
- Downtime Risk: Mitigate by scheduling migrations during off-peak hours and having a rollback plan.
- Data Loss Risk: Mitigate by implementing robust backup and recovery solutions.
- User Resistance: Mitigate through effective communication and training.
Conclusion
This project will create a seamless, secure, and efficient email environment by integrating On-Prem Exchange 2016 with Exchange Online, enhanced by Mimecast’s security features. The hybrid solution will provide flexibility, scalability, and improved user experience.
This proposal outlines the high-level steps and considerations for the successful integration of On-Prem Exchange 2016 and Exchange Online, ensuring a secure and efficient email system for the organization.
