Remove All Emails from a specific sender

1.  Connect to Exchange On-line

1. 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

1. Type in your ada credentials with username of <username>@domain.com
2. Type in your domain admin credentials with username of domain\<username>

 

1. Run this command in Powershell

 

 

Search-Mailbox -identity “User Mailbox” -SearchQuery “From:user@domain.com” -deletecontent