Issue A mailbox failed to be migrated to Exchange Online with the following error: SourceEmailAddressNotUniquePermanentExeption: The provided email address “test.user1@x500.co.uk” was not unique on the
Category: Exchange Online
Exchange 2007 to Office 365 Staged Migration – convert Mailbox to MEU
Overview In an Exchange 2007 to Office 365 Staged Migration, when a mailbox has been successfully migrated to Exchange Online, it is necessary to convert
Send As: “You can’t use the domain because it’s not an accepted domain for your organization”
Issue Send As permissions cannot be applied to mailboxes migrated to Office 365. When applying permissions through the Office 365 Exchange Admin center, the following
Connecting to Exchange Online with PowerShell
This article explains how to connect to Exchange Online with PowerShell. Prerequisites You need to be a Global Administrator in the Office 365 Tenant, or
