public/maester/exchange/Test-MtExoRejectDirectSend.ps1
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<# .SYNOPSIS Checks if direct send is configured to reject .DESCRIPTION Attackers can exploit direct send to send spam or phishing emails without authentication. Direct Send covers anonymous messages (unauthenticated messages) sent from your own domain to your organization's mailboxes using the tenant MX .EXAMPLE Test-MtExoRejectDirectSend Returns true if direct send is configured to reject .LINK https://maester.dev/docs/commands/Test-MtExoRejectDirectSend #> function Test-MtExoRejectDirectSend { [CmdletBinding()] [OutputType([bool])] param() if (!(Test-MtConnection ExchangeOnline)) { Add-MtTestResultDetail -SkippedBecause NotConnectedExchange return $null } try { Write-Verbose "Getting Organization..." $organizationConfig = Get-MtExo -Request OrganizationConfig $result = $organizationConfig.RejectDirectSend if ($result) { $testResultMarkdown = "Well done. RejectDirectSend is ``$($result)``.`n`n" } else { $testResultMarkdown = "``RejectDirectSend`` should be ``True``. RejectDirectSend is ``$($result)``.`n`n" } Add-MtTestResultDetail -Result $testResultMarkdown } catch { Add-MtTestResultDetail -SkippedBecause Error -SkippedError $_ return $null } return $result } |