Public/Configuration/Add-ExternalWarningInOutlook.ps1

function Add-ExternalWarningInOutlook {
    param(
        [Parameter(Mandatory)]
        [string]$TenantId
    )

    try {
        Connect-CustomerExchange -CustomerTenantId $TenantId

        Set-ExternalInOutlook -Enabled $true

        Write-ModuleLog -Message "External warning in outlook enabled." -Level Info -Component 'Add-ExternalWarningInOutlook'
    }
    catch {
        throw $_
    }
}