ROOTM365

1.0.1

SHELL/6.2.2.ps1

$CheckId = "6.2.2"
$Title = "Ensure mail transport rules do not whitelist specific domains"
$Level = "L1"
$BenchmarkType = "Automated"

try {
    $NonCompliantRules = @(
        Get-TransportRule -ErrorAction Stop |
            Where-Object { $_.SetSCL -eq -1 -and $_.SenderDomainIs -ne $null } |
            Select-Object Name, SenderDomainIs, SetSCL
    )

    $Pass = $NonCompliantRules.Count -eq 0
    $Status = if ($Pass) { "PASS" } else { "FAIL" }

    [pscustomobject]@{
        CheckId = $CheckId
        Title = $Title
        Level = $Level
        BenchmarkType = $BenchmarkType
        Status = $Status
        Pass = $Pass
        Evidence = [pscustomobject]@{
            NonCompliantRuleCount = $NonCompliantRules.Count
            NonCompliantRules = $NonCompliantRules
            SourceDocument = "CIS_Microsoft_365_Foundations_Benchmark_v6.0.1"
        }
        Error = if ($Pass) { $null } else { "One or more transport rules whitelist domains by setting SetSCL to -1 with SenderDomainIs populated." }
        Timestamp = Get-Date
    }
}
catch {
    [pscustomobject]@{
        CheckId = $CheckId
        Title = $Title
        Level = $Level
        BenchmarkType = $BenchmarkType
        Status = "ERROR"
        Pass = $null
        Evidence = [pscustomobject]@{
            SourceDocument = "CIS_Microsoft_365_Foundations_Benchmark_v6.0.1"
        }
        Error = $_.Exception.Message
        Timestamp = Get-Date
    }
}