Microsoft 365
TMA-M365-DKIM-ENABLED
Ensure DKIM signing is enabled for all Exchange Online domains
Beschreibung
DKIM signatures let receivers verify mail really came from your domains and are a prerequisite for an enforcing DMARC policy. Prints the number of domains whose DKIM signing configuration is not enabled (expected 0). Requires an already-connected Exchange Online session: Install-Module ExchangeOnlineManagement; Connect-ExchangeOnline (View-Only Organization Management is sufficient). The audit throws if no session exists.
So wird geprüft
Prüfmethode: Shell-Befehl
$ErrorActionPreference = 'Stop'; if (-not (Get-Command Get-ConnectionInformation -ErrorAction SilentlyContinue) -or -not (Get-ConnectionInformation)) { throw 'Not connected: run Connect-ExchangeOnline first' }; $bad = @(Get-DkimSigningConfig -ErrorAction Stop | Where-Object { $_.Enabled -ne $true }); $bad.Count- Erwartete Ausgabe
0
So wird behoben
Behebungsmethode: Anleitung oder Infrastruktur-Patch
Publish the selector1/selector2 CNAME records shown by Get-DkimSigningConfig -Identity <domain> | Format-List Selector*CNAME, then New-DkimSigningConfig -DomainName <domain> -Enabled $true or Set-DkimSigningConfig -Identity <domain> -Enabled $true.
Eigenschaften
- Betriebssysteme
- Beliebig
- Tags
- m365mail-auth
- Referenz
- CIS Microsoft 365 Foundations Benchmark v7.0.0 - Exchange Online / DKIM (verify section number for your release)
Diesen Host prüfen
Führen Sie dies auf einem Rechner aus, den Sie prüfen dürfen. Der Scan ist schreibgeschützt.
tmaegis scan --target m365