Get-MsIdIsViralUser.ps1
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<# .SYNOPSIS Returns true if the user's mail domain is a viral (unmanaged) Azure AD tenant. .DESCRIPTION To learn more about viral tenants see [Take over an unmanaged directory as administrator in Azure Active Directory](https://docs.microsoft.com/azure/active-directory/enterprise-users/domains-admin-takeover) .EXAMPLE PS > Get-MsIdIsViralUser -Mail john@yopmail.net Check if the mail address is from a viral tenant. #> function Get-MsIdIsViralUser { [CmdletBinding()] param ( # The email address of the external user. [Parameter(Mandatory = $true, ValueFromPipeline = $true, ValueFromPipelineByPropertyName = $true, ValueFromRemainingArguments = $false)] [string] $Mail ) $userRealm = Get-MsftUserRealm $Mail $isExternalAzureADViral = (Get-ObjectPropertyValue $userRealm 'IsViral') -eq "True" return $isExternalAzureADViral } |