Category: Office 365 Basics

Disable the Clutter feature in O365 mailboxes

To disabled the clutter feature in a user’s O365 mailbox run the following command:   Turn off Clutter for single user Get-Mailbox –identity someone@somewhere.com | Set-Clutter -enable $false    OR   Single mailbox: Set-Clutter -Identity <user name> -Enable $false      If you want to disable this feature for all users in your tenant as an admin, […]

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Delete all Calendar events from a mailbox

Connect to O365 using powershell first   Open PowerShell or EMS If this is an O365 mailbox, you will need to connect to the O365 environment Connect to Exchange On-line From the PowerShell console on an Exchange 2010 server: $Cred = Get-Credential  $s = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://ps.outlook.com/powershell -Credential $cred -Authentication Basic –AllowRedirection  Import-PSSession $s    Then run this command in powershell: Search-Mailbox […]

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How to copy old user’s mailbox to another user’s mailbox on Office 365 and Exchange Server using PowerShell

You will come across the issue with leavers mailboxes needing to be transferred to another users mailbox. If you are looking after on-site exchange, then the process is slightly shorter as you don’t need to connect to the remote Powershell.   To connect to O365 first run this PS command: $Cred = Get-Credential  $s = New-PSSession -ConfigurationName […]

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Bulk import email aliases to Office 365 using Powershell

If you need to add email aliases to O365 accts in bulk use the following (EMS) powershell command with the CSV file formatted this way:   Name ProxyAddresses user1@domainold.com user1@domainnew.com   Run this in EMS: Import-Csv C:\email-aliases.csv | ForEach-Object{ $name = $_.Name }  Import-Csv C:\email-aliases.csv | ForEach-Object{ $proxy = $_.ProxyAddresses -split ‘;’}  Set-RemoteMailbox -Identity $name -EmailAddresses @{add= $proxy}    OR   Get […]

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Enable Litigation Hold for all Mailboxes in Office 365

There’s no built-in feature at this time to enable litigation hold for all mailboxes in Exchange Online, but some organisations have this as a requirement. Here’s a script that can be run ad-hoc to enable litigation hold for all mailboxes. When prompted, enter your Exchange Online credentials.   # Connect to Exchange Online $exo = New-PSSession […]

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Unable to Migrate User to O365 – “Target user already has a primary mailbox”

If you run into an issue where a user has both a mailbox in Exchange on-premise and O365, and you cannot migrate the account to O365. Error: “Target user already has a primary mailbox”   FIX: Remove the O365 account and then do a full DirSync.  Once done, migrate the on-prem mailbox to O365.   […]

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Delete a Calendar item from a mailbox

If you have the need to remove a specific calendar event/appointment from a mailbox, you can do it through Power Shell or Exchange Management Shell.   Open PowerShell or EMS If this is an O365 mailbox, you will need to connect to the O365 environment Connect to Exchange On-line From the PowerShell console on an […]

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Delete emails from specific sender in one users mailbox

1.  Connect to Exchange On-line From the PowerShell console on an Exchange 2010 server: $Cred = Get-Credential  $s = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://ps.outlook.com/powershell -Credential $cred -Authentication Basic –AllowRedirection  Import-PSSession $s    Run this command in Powershell   Search-Mailbox -identity “User Mailbox” -SearchQuery “From:user@domain.com” -deletecontent 

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Delete specific email from O365 mailboxes

1.  Connect to Exchange On-line From the PowerShell console on an Exchange 2010 server: $Cred = Get-Credential  $s = New-PSSession -ConfigurationName Microsoft.Exchange -ConnectionUri https://ps.outlook.com/powershell -Credential $cred -Authentication Basic –AllowRedirection  Import-PSSession $s  Type in your ada credentials with username of <username>@domain.com Type in your ada credentials with username of domain\<username>   Run this command: you will […]

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