Ensure 'Blank sender field' is configured

MediaNivel 1Automatizadaexchange

Descripción

When the Sender Filter Agent takes on messages from blocked senders or domains, the Action parameter is what is used when deciding what to do with these messages. Prints compliant when sender filter Action is Reject and BlankSenderBlockingEnabled is True. Run on each Edge Transport server. Run from an Exchange Management Shell or after `Add-PSSnapin Microsoft.Exchange.Management.PowerShell.SnapIn`; the audit loads the snap-in itself when Get-ExchangeServer is missing and fails if it cannot.

Cómo se verifica

Método de auditoría: Comando de shell

shell

$ErrorActionPreference = 'Stop'; if (-not (Get-Command Get-ExchangeServer -ErrorAction SilentlyContinue)) { Add-PSSnapin Microsoft.Exchange.Management.PowerShell.SnapIn -ErrorAction Stop }; if (-not (Get-Command Get-ExchangeServer -ErrorAction SilentlyContinue)) { throw 'Exchange Management Shell cmdlets are not available' }; $c = Get-SenderFilterConfig -ErrorAction Stop; if ("$($c.Action)" -eq 'Reject' -and $c.BlankSenderBlockingEnabled -eq $true) { 'compliant' } else { 'noncompliant' }

Salida esperada: compliant

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

Set-SenderFilterConfig -Action Reject -BlankSenderBlockingEnabled $true

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: exchangeantispam
Referencia: CIS Microsoft Exchange Server 2019 Benchmark v1.0.1 - 1.4 Ensure 'Blank sender field' is configured

Verificar este host

Ejecute esto en un equipo que tenga permiso para auditar. El escaneo es de solo lectura.

shell

tmaegis scan --target exchange