Distribution List Migration in Office 365

Migrate distribution lists between Office 365 tenants with Cloudiway.

Last updated: 2025-01-15 How To

Overview

Cloudiway's mailbox migration tool includes a dedicated feature for managing distribution list migrations between Office 365 tenants. The tool helps identify distribution lists in source tenants and provisions them in target environments.

The setup process mirrors the workflow for shared mailboxes or room/equipment mailboxes, making it familiar if you've used those features.

Distribution List Migration Flow

📋
Source Tenant
Distribution Lists
🔄
Cloudiway
Map & Provision
Target Tenant
New DLs Created

Prerequisites

Before You Begin

  • Complete the mail migration admin guide setup
  • Establish your project and tenant configurations
  • Configure source and target Office 365 connectors

Populate the Migration List

Access Location

Navigate to the Mail Migration area within your migration project, where you'll find the Distribution List section.

Import Methods

1

Import via CSV File

Upload a CSV file containing your distribution list information.

2

Manual Entry

Manually create entries individually for smaller migrations.

3

Auto-Detect with "Get List"

Use the "Get List" feature to automatically detect existing distribution lists from your source tenant.

Configuration Options

When auto-detecting, specify:

  • Source connector
  • Target connector
  • Target distribution list email format
  • Matching rules for email prefix generation
  • Target domain and optional prefixes

Important for Office 365 Tenant Migrations

Since two Office 365 tenants cannot simultaneously use the same domain, you must use matching rules other than "Mail Exact Match" and specify a target email domain name.

Provisioning Distribution Lists

Provision Target Distribution Lists

1

Select Items

Select the distribution lists you want to provision in the target tenant.

2

Access Migration Menu

Open the Migration menu from the toolbar.

3

Run Pre-Processing

Choose "Pre-Processing" to create the target distribution lists in your destination tenant.

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