public/Get-DKIMRecord.ps1
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<#>
HelpInfoURI 'https://github.com/T13nn3s/Show-SpfDkimDmarc/blob/main/public/CmdletHelp/Get-DKIMRecord.md' #> function Get-DKIMRecord { [CmdletBinding()] param( [Parameter( Mandatory = $True, ValueFromPipeline = $True, ValueFromPipelineByPropertyName = $True, HelpMessage = "Specifies the domain for resolving the DKIM-record." )][string]$Name, [Parameter(Mandatory = $False, HelpMessage = "Specify a custom DKIM selector.")] [string]$DkimSelector, [Parameter(Mandatory = $false, HelpMessage = "DNS Server to use.")] [string]$Server ) begin { Write-Verbose "Starting $($MyInvocation.MyCommand)" $PSBoundParameters | Out-String | Write-Verbose if ($PSBoundParameters.ContainsKey('Server')) { $SplatParameters = @{ 'Server' = $Server 'ErrorAction' = 'SilentlyContinue' } } Else { $SplatParameters = @{ 'ErrorAction' = 'SilentlyContinue' } } # Custom list of DKIM-selectors # https://help.sendmarc.com/support/solutions/articles/44001891845-email-provider-commonly-used-dkim-selectors $DkimSelectors = @( 'selector1' # Microsoft 'selector2' # Microsoft 'google', # Google 'everlytickey1', # Everlytic 'everlytickey2', # Everlytic 'eversrv', # Everlytic OLD selector 'k1', # Mailchimp / Mandrill 'mxvault' # Global Micro 'dkim' # Hetzner ) $DKimObject = New-Object System.Collections.Generic.List[System.Object] } Process { if ($DkimSelector) { $DKIM = Resolve-DnsName -Type TXT -Name "$($DkimSelector)._domainkey.$($Name)" @SplatParameters if ($DKIM.Type -eq "CNAME") { while ($DKIM.Type -eq "CNAME") { $DKIMCname = $DKIM.NameHost $DKIM = Resolve-DnsName -Type TXT -name "$DKIMCname" @SplatParameters } $DKIM = $DKIM | Select-Object -ExpandProperty Strings -ErrorAction SilentlyContinue if ($DKIM -eq $null) { $DkimAdvisory = "No DKIM-record found for selector $($DkimSelector)._domainkey." } elseif ($DKIM -match "v=DKIM1" -or $DKIM -match "k=") { $DkimAdvisory = "DKIM-record found." } } else { $DKIM = $DKIM | Select-Object -ExpandProperty Strings -ErrorAction SilentlyContinue if ($DKIM -eq $null) { $DkimAdvisory = "No DKIM-record found for selector $($DkimSelector)._domainkey." } elseif ($DKIM -match "v=DKIM1" -or $DKIM -match "k=") { $DkimAdvisory = "DKIM-record found." } } } else { foreach ($DkimSelector in $DkimSelectors) { $DKIM = Resolve-DnsName -Type TXT -Name "$($DkimSelector)._domainkey.$($Name)" @SplatParameters if ($DKIM.Type -eq "CNAME") { while ($DKIM.Type -eq "CNAME") { $DKIMCname = $DKIM.NameHost $DKIM = Resolve-DnsName -Type TXT -name "$DKIMCname" @SplatParameters } $DKIM = $DKIM | Select-Object -ExpandProperty Strings -ErrorAction SilentlyContinue if ($DKIM -eq $null) { $DkimAdvisory = "No DKIM-record found for selector $($DkimSelector)._domainkey." } elseif ($DKIM -match "v=DKIM1" -or $DKIM -match "k=") { $DkimAdvisory = "DKIM-record found." break } } else { $DKIM = $DKIM | Select-Object -ExpandProperty Strings -ErrorAction SilentlyContinue if ($DKIM -eq $null) { $DkimAdvisory = "We couldn't find a DKIM record associated with your domain." } elseif ($DKIM -match "v=DKIM1" -or $DKIM -match "k=") { $DkimAdvisory = "DKIM-record found." break } } } } } end { $DkimReturnValues = New-Object psobject $DkimReturnValues | Add-Member NoteProperty "Name" $Name $DkimReturnValues | Add-Member NoteProperty "DkimRecord" $DKIM $DkimReturnValues | Add-Member NoteProperty "DkimSelector" $DkimSelector $DkimReturnValues | Add-Member NoteProperty "DKIMAdvisory" $DkimAdvisory $DkimObject.Add($DkimReturnValues) $DkimReturnValues } } Set-Alias gdkim -Value Get-DKIMRecord |