How To Forward Office 365 Email Address To External Address Without A Mailbox

Create a Shared Mailbox from an Existing Synced User Account

Connect to Exchange Online with Remote PowerShell

  1. Click Start


  2. Click Administrative Tools


  3. Right Click Windows PowerShell Modules and Run as administrator


Office 365 default E-mail address using ADSI Edit when using DirSync

Open ADSI Edit

Navigate to User

Right-click on Properties

Navigate to proxyAddresses or if Exchange Schema is loaded msExchShadowProxy

Add or correct   ->    SMTP: <email address is added> 


Apply the changes and force a DirSync to Office365 Azure AD

See the article: 

Force Azure AD Connect DirSync to sync with Office365 Azure AD


With build 6862 the PowerShell module has moved.  The location for this module is now:

C:\program Files\Windows Azure Active Directory Sync\DirSync\ImportModules.ps1

To allow us to execute the Start-OnlineCoexistenceSync cmdlet we can either:

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