Microsoft Exchange Server
TMA-EXCHANGE-1.2
Ensure 'Configure sender filtering' is set to 'Enabled'
Description
Sender filtering compares a list of blocked senders that's maintained by the Exchange administrator. Note: For more information on how to create the list for blocked senders, please visit: Use the Exchange Management Shell to configure blocked senders and domains for sender filtering Note #2: Sender filtering is enabled (by default) on a system performing the Edge Transport server role. Prints compliant when sender filtering is Enabled. 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.
How it is checked
Audit method: Shell command
$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.Enabled -eq $true) { 'compliant' } else { 'noncompliant' }- Expected output
compliant
How it is fixed
Fix method: Guidance or infrastructure patch
Set-SenderFilterConfig -Enabled $true
Properties
- Operating systems
- Any
- Tags
- exchangeantispam
- Reference
- CIS Microsoft Exchange Server 2019 Benchmark v1.0.1 - 1.2 Ensure 'Configure sender filtering' is set to 'Enabled'
Check this host
Run this on a machine you are allowed to audit. The scan is read-only.
tmaegis scan --target exchange