Ensure 'Enable automatic forwards to remote domains' is set to 'False'

AltaNivel 1Automatizadaexchange

Descripción

This policy setting is used to determine if the server can send automatic forwards to remote domains. Prints the number of remote domains where AutoForwardEnabled is not False (expected 0). Automatic forwarding to external domains is a common exfiltration path. Every remote domain (including Default) is checked. Run on a Mailbox server (organization-wide objects are read from AD). 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' }; $bad = @(Get-RemoteDomain -ErrorAction Stop | Where-Object { $_.AutoForwardEnabled -ne $false }); $bad.Count

Salida esperada: 0

Cómo se corrige

Método de corrección: Guía o parche de infraestructura

Set-RemoteDomain '<RemoteDomain>' -AutoForwardEnabled $false

Propiedades

Sistemas operativos: Cualquiera
Etiquetas: exchangeremote-domains
Referencia: CIS Microsoft Exchange Server 2019 Benchmark v1.0.1 - 2.3.4 Ensure 'Enable automatic forwards to remote domains' is set to 'False'

Verificar este host

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

shell

tmaegis scan --target exchange