PSBlackListChecker.psm1

[string[]] $Script:BlackLists = @(
    'b.barracudacentral.org'
    'spam.rbl.msrbl.net'
    'zen.spamhaus.org'
    'bl.deadbeef.com'
    'bl.emailbasura.org'
    'bl.spamcannibal.org'
    'bl.spamcop.net'
    'blackholes.five-ten-sg.com'
    'blacklist.woody.ch'
    'bogons.cymru.com'
    'cbl.abuseat.org'
    'cdl.anti-spam.org.cn'
    'combined.abuse.ch'
    'combined.rbl.msrbl.net'
    'db.wpbl.info'
    'dnsbl-1.uceprotect.net'
    'dnsbl-2.uceprotect.net'
    'dnsbl-3.uceprotect.net'
    # 'dnsbl.ahbl.org' # as per https://ahbl.org/ was terminated in 2015
    'dnsbl.cyberlogic.net'
    'dnsbl.inps.de'
    #'dnsbl.njabl.org' # supposedly doesn't work properly anymore
    'dnsbl.sorbs.net'
    'drone.abuse.ch'
    'drone.abuse.ch'
    'duinv.aupads.org'
    'dul.dnsbl.sorbs.net'
    'dul.ru'
    'dyna.spamrats.com'
    'dynip.rothen.com'
    'http.dnsbl.sorbs.net'
    'images.rbl.msrbl.net'
    'ips.backscatterer.org'
    'ix.dnsbl.manitu.net'
    'korea.services.net'
    'misc.dnsbl.sorbs.net'
    'noptr.spamrats.com'
    'ohps.dnsbl.net.au'
    'omrs.dnsbl.net.au'
    'orvedb.aupads.org'
    'osps.dnsbl.net.au'
    'osrs.dnsbl.net.au'
    'owfs.dnsbl.net.au'
    'owps.dnsbl.net.au'
    'pbl.spamhaus.org'
    'phishing.rbl.msrbl.net'
    'probes.dnsbl.net.au'
    'proxy.bl.gweep.ca'
    'proxy.block.transip.nl'
    'psbl.surriel.com'
    'rbl.interserver.net'
    'rdts.dnsbl.net.au'
    'relays.bl.gweep.ca'
    'relays.bl.kundenserver.de'
    'relays.nether.net'
    'residential.block.transip.nl'
    'ricn.dnsbl.net.au'
    'rmst.dnsbl.net.au'
    'sbl.spamhaus.org'
    'short.rbl.jp'
    'smtp.dnsbl.sorbs.net'
    'socks.dnsbl.sorbs.net'
    'spam.abuse.ch'
    'spam.dnsbl.sorbs.net'
    'spam.spamrats.com'
    'spamlist.or.kr'
    'spamrbl.imp.ch'
    't3direct.dnsbl.net.au'
    #'tor.ahbl.org' # as per https://ahbl.org/ was terminated in 2015
    'tor.dnsbl.sectoor.de'
    'torserver.tor.dnsbl.sectoor.de'
    'ubl.lashback.com'
    'ubl.unsubscore.com'
    'virbl.bit.nl'
    'virus.rbl.jp'
    'virus.rbl.msrbl.net'
    'web.dnsbl.sorbs.net'
    'wormrbl.imp.ch'
    'xbl.spamhaus.org'
    'zombie.dnsbl.sorbs.net'
)
$Script:ScriptBlockNetDNS = {
    param (
        [string] $Server,
        [string] $IP,
        [bool] $QuickTimeout,
        [bool] $Verbose
    )
    if ($Verbose) {
        $verbosepreference = 'continue'
    }
    $ReversedIP = ($IP -split '\.')[3..0] -join '.'
    $FQDN = "$ReversedIP.$Server"
    try {
        $DnsCheck = [Net.DNS]::GetHostAddresses($fqdn)
    } catch {
        $DnsCheck = $null
    }
    if ($null -ne $DnsCheck) {
        $ServerData = [PSCustomObject] @{
            IP        = $IP
            FQDN      = $FQDN
            BlackList = $Server
            IsListed  = if ($null -eq $DNSCheck.IPAddressToString) { $false } else { $true }
            Answer    = $DnsCheck.IPAddressToString -join ', '
            TTL       = ''
        }
    } else {
        $ServerData = [PSCustomObject] @{
            IP        = $IP
            FQDN      = $FQDN
            BlackList = $Server
            IsListed  = $false
            Answer    = ""
            TTL       = ''
        }
    }

    return $ServerData
}
$Script:ScriptBlockNetDNSSlow = {
    param (
        [string[]] $Servers,
        [string[]] $IPs,
        [bool] $QuickTimeout,
        [bool] $Verbose
    )
    if ($Verbose) {
        $verbosepreference = 'continue'
    }

    $Blacklisted = foreach ($Server in $Servers) {
        foreach ($IP in $IPS) {
            [string] $ReversedIP = ($IP -split '\.')[3..0] -join '.'
            [string] $FQDN = "$ReversedIP.$Server"
            try {
                $DnsCheck = [Net.DNS]::GetHostAddresses($FQDN)
            } catch {
                $DnsCheck = $null
            }
            if ($null -ne $DnsCheck) {
                [PSCustomObject] @{
                    IP        = $ip
                    FQDN      = $fqdn
                    BlackList = $server
                    IsListed  = if ($null -eq $DNSCheck.IPAddressToString) { $false } else { $true }
                    Answer    = $DnsCheck.IPAddressToString -join ', '
                    TTL       = ''
                }
            } else {
                [PSCustomObject] @{
                    IP        = $IP
                    FQDN      = $FQDN
                    BlackList = $Server
                    IsListed  = $false
                    Answer    = ''
                    TTL       = ''
                }
            }
        }
    }
    return $Blacklisted
}
$Script:ScriptBlockResolveDNS = {
    param (
        [string] $Server,
        [string] $IP,
        [bool] $QuickTimeout,
        [bool] $Verbose,
        [string[]] $DNSServer = ''
    )
    if ($Verbose) {
        $verbosepreference = 'continue'
    }
    [string] $ReversedIP = ($IP -split '\.')[3..0] -join '.'
    [string] $FQDN = "$ReversedIP.$Server"

    [int] $Count = 0
    [bool] $Loaded = $false
    Do {
        try {
            Import-Module -Name 'DnsClient' -Verbose:$false
            $Loaded = $true
        } catch {
            Write-Warning "DNSClient Import Error ($Server / $FQDN / $IP): $_. Retrying."
        }
        $Count++
        if ($Loaded -eq $false -and $Count -eq 5) {
            Write-Warning "DNSClient Import failed. Skipping check on $Server / $FQDN / $IP"
        }
    } until ($Loaded -eq $false -or $Count -eq 5)

    if ($DNSServer -ne '') {
        $DnsCheck = Resolve-DnsName -Name $fqdn -ErrorAction SilentlyContinue -NoHostsFile -QuickTimeout:$QuickTimeout -Server $DNSServer -DnsOnly  # Impact of using -QuickTimeout unknown
    } else {
        $DnsCheck = Resolve-DnsName -Name $fqdn -ErrorAction SilentlyContinue -NoHostsFile -QuickTimeout:$QuickTimeout -DnsOnly
    }


    if ($null -ne $DnsCheck) {
        $ServerData = [PSCustomObject] @{
            IP        = $IP
            FQDN      = $FQDN
            BlackList = $Server
            IsListed  = if ($null -eq $DNSCheck.IpAddress) { $false } else { $true }
            Answer    = $DnsCheck.IPAddress -join ', '
            TTL       = $DnsCheck.TTL -join ', '
        }
    } else {
        $ServerData = [PSCustomObject]  @{
            IP        = $IP
            FQDN      = $FQDN
            BlackList = $Server
            IsListed  = $false
            Answer    = ''
            TTL       = ''
        }
    }
    return $ServerData
}
$Script:ScriptBlockResolveDNSSlow = {
    param (
        [string[]] $Servers,
        [string[]] $IPs,
        [bool] $QuickTimeout,
        [bool] $Verbose,
        [string[]] $DNSServer = ''
    )
    if ($Verbose) {
        $verbosepreference = 'continue'
    }
    $Blacklisted = foreach ($Server in $Servers) {
        foreach ($IP in $IPS) {
            $ReversedIP = ($IP -split '\.')[3..0] -join '.'
            $FQDN = "$ReversedIP.$Server"
            if ($DNSServer -ne '') {
                $DnsCheck = Resolve-DnsName -Name $fqdn -ErrorAction SilentlyContinue -NoHostsFile -QuickTimeout:$QuickTimeout -Server $DNSServer -DnsOnly  # Impact of using -QuickTimeout unknown
            } else {
                $DnsCheck = Resolve-DnsName -Name $fqdn -ErrorAction SilentlyContinue -NoHostsFile -QuickTimeout:$QuickTimeout -DnsOnly
            }
            if ($null -ne $DnsCheck) {
                [PSCustomObject] @{
                    IP        = $IP
                    FQDN      = $FQDN
                    BlackList = $Server
                    IsListed  = if ($null -eq $DNSCheck.IpAddress) { $false } else { $true }
                    Answer    = $DnsCheck.IPAddress -join ', '
                    TTL       = $DnsCheck.TTL -join ', '
                }
            } else {
                [PSCustomObject] @{
                    IP        = $IP
                    FQDN      = $FQDN
                    BlackList = $Server
                    IsListed  = $false
                    Answer    = ''
                    TTL       = ''
                }
            }
        }
    }
    return $Blacklisted
}
function Search-BlackList {
    <#
    .SYNOPSIS
    Search-Blacklist searches if particular IP is blacklisted on DNSBL Blacklists.
 
    .DESCRIPTION
    Long description
 
    .PARAMETER IPs
    Parameter description
 
    .PARAMETER BlacklistServers
    Parameter description
 
    .PARAMETER ReturnAll
    Parameter description
 
    .PARAMETER RunType
    Parameter description
 
    .PARAMETER SortBy
    Parameter description
 
    .PARAMETER SortDescending
    Parameter description
 
    .PARAMETER QuickTimeout
    Parameter description
 
    .PARAMETER MaxRunspaces
    Parameter description
 
    .PARAMETER ExtendedOutput
    Parameter description
 
    .EXAMPLE
    Search-BlackList -IP '89.25.253.1' | Format-Table
 
    .EXAMPLE
    Search-BlackList -IP '89.25.253.1' -SortBy Blacklist | Format-Table
 
    .EXAMPLE
    Search-BlackList -IP '89.25.253.1','195.55.55.55' -SortBy Ip -ReturnAll | Format-Table
 
    .NOTES
    General notes
    #>


    [cmdletbinding()]
    param
    (
        [alias('IP')][string[]] $IPs,
        [string[]] $BlacklistServers = $Script:BlackLists,
        [switch] $ReturnAll,
        [ValidateSet('NoWorkflowAndRunSpaceNetDNS', 'NoWorkflowAndRunSpaceResolveDNS', 'RunSpaceWithResolveDNS', 'RunSpaceWithNetDNS', 'WorkflowResolveDNS', 'WorkflowWithNetDNS')]
        [string]$RunType,
        [ValidateSet('IP', 'BlackList', 'IsListed', 'Answer', 'FQDN')][string] $SortBy = 'IsListed',
        [switch] $SortDescending,
        [switch] $QuickTimeout,
        [int] $MaxRunspaces = 10,
        [string[]] $DNSServer = '',
        [switch] $ExtendedOutput
    )
    if ($PSCmdlet.MyInvocation.BoundParameters["Verbose"].IsPresent) { $Verbose = $true } else { $Verbose = $false }

    # will remove this after a while
    if ($RunType -eq 'WorkflowResolveDNS') {
        Write-Warning 'Worflows are not supported anymore due to PowerShell 6 complaining. Please use other modes.'
        Exit
    } elseif ($RunType -eq 'WorkflowWithNetDNS') {
        Write-Warning 'Worflows are not supported anymore due to PowerShell 6 complaining. Please use other modes.'
        Exit
    }

    # no parameter given (and it's expected)
    if ($RunType -eq '') {
        $RunType = 'RunSpaceWithNetDNS'
        <#
        if ($PSVersionTable.Platform -eq 'Unix') {
            $RunType = 'RunSpaceWithNetDNS'
        } else {
            $RunType = 'RunSpaceWithResolveDNS'
        }
        #>

    }

    # checks whether Runspaces are not set for use on Unix (usually forced by user)
    if ($PSVersionTable.Platform -eq 'Unix') {
        if ($RunType -eq 'RunSpaceWithResolveDNS') {
            $RunType = 'RunSpaceWithNetDNS'
            Write-Warning 'Search-BlackList - changing RunType to RunSpaceWithNetDNS since Resolve-DNSName is not available on Linux/MacOS'
        } elseif ($RunType -eq 'NoWorkflowAndRunSpaceResolveDNS') {
            $RunType = 'NoWorkflowAndRunSpaceNetDNS'
            Write-Warning 'Search-BlackList - changing RunType to RunSpaceWithNetDNS since Resolve-DNSName is not available on Linux/MacOS'
        }
    }

    if ($DNSServer -ne '' -and $RunType -like 'NetDNS') {
        Write-Warning 'Search-BlackList - Setting DNSServer is not supported for Net.DNS. Resetting to default values.'
        $DNSServer = ''
    }

    Write-Verbose "Search-Blacklist - Runtype: $RunType ReturnAll: $ReturnAll, SortBy: $SortBy MaxRunspaces: $MaxRunspaces SortDescending: $SortDescending"

    If ($RunType -eq 'NoWorkflowAndRunSpaceNetDNS') {
        $Table = Invoke-Command -ScriptBlock $Script:ScriptBlockNetDNSSlow -ArgumentList $BlacklistServers, $IPs, $QuickTimeout, $Verbose
    } elseif ($RunType -eq 'NoWorkflowAndRunSpaceResolveDNS') {
        $Table = Invoke-Command -ScriptBlock $Script:ScriptBlockResolveDNSSlow -ArgumentList $BlacklistServers, $IPs, $QuickTimeout, $Verbose, $DNSServer
    } elseif ($RunType -eq 'RunSpaceWithResolveDNS') {
        ### Define Runspace START
        $pool = New-Runspace -MaxRunspaces $maxRunspaces -Verbose:$Verbose
        ### Define Runspace END
        $runspaces = foreach ($Server in $BlacklistServers) {
            foreach ($IP in $IPs) {
                $Parameters = @{
                    Server       = $Server
                    IP           = $IP
                    QuickTimeout = $QuickTimeout
                    Verbose      = $Verbose
                    DNSServer    = $DNSServer
                }
                Start-Runspace -ScriptBlock $Script:ScriptBlockResolveDNS -Parameters $Parameters -RunspacePool $pool -Verbose:$Verbose
            }
        }
        ### End Runspaces START
        $Output = Stop-Runspace -Runspaces $runspaces -FunctionName 'Search-BlackList' -RunspacePool $pool -Verbose:$Verbose -ErrorAction Continue -ErrorVariable MyErrors -ExtendedOutput:$ExtendedOutput
        if ($ExtendedOutput) {
            $Output # returns hashtable of Errors and Output
            Exit
        } else {
            $Table = $Output
        }
        ### End Runspaces END

    } elseif ($RunType -eq 'RunSpaceWithNetDNS') {
        ### Define Runspace START
        $pool = New-Runspace -MaxRunspaces $maxRunspaces -Verbose:$Verbose
        ### Define Runspace END
        $runspaces = foreach ($server in $BlacklistServers) {
            foreach ($ip in $IPs) {
                $Parameters = @{
                    Server       = $Server
                    IP           = $IP
                    QuickTimeout = $QuickTimeout
                    Verbose      = $Verbose
                    #DNSServer = $DNSServer
                }
                Start-Runspace -ScriptBlock $Script:ScriptBlockNetDNS -Parameters $Parameters -RunspacePool $pool -Verbose:$Verbose
            }
        }
        ### End Runspaces START
        $Output = Stop-Runspace -Runspaces $runspaces -FunctionName 'Search-BlackList' -RunspacePool $pool -Verbose:$Verbose -ExtendedOutput:$ExtendedOutput
        if ($ExtendedOutput) {
            $Output # returns hashtable of Errors and Output
            Exit
        } else {
            $Table = $Output
        }
        ### End Runspaces END
    }
    if ($SortDescending -eq $true) {
        $Table = $Table | Sort-Object $SortBy -Descending
    } else {
        $Table = $Table | Sort-Object $SortBy
    }
    if ($ReturnAll -eq $true) {
        return $Table | Select-Object IP, FQDN, BlackList, IsListed, Answer, TTL
    } else {
        return $Table | Where-Object { $_.IsListed -eq $true } | Select-Object IP, FQDN, BlackList, IsListed, Answer, TTL
    }
}
function Set-EmailBody($TableData, $TableWelcomeMessage) {
    $body = "<p><i>$TableWelcomeMessage</i>"
    if ($($TableData | Measure-Object).Count -gt 0) {
        $body += $TableData | ConvertTo-Html -Fragment | Out-String
        $body = $body -replace ' Added', "<font color=`"green`"><b> Added</b></font>"
        $body = $body -replace ' Removed', "<font color=`"red`"><b> Removed</b></font>"
        $body = $body -replace ' Deleted', "<font color=`"red`"><b> Deleted</b></font>"
        $body = $body -replace ' Changed', "<font color=`"blue`"><b> Changed</b></font>"
        $body = $body -replace ' Change', "<font color=`"blue`"><b> Change</b></font>"
        $body = $body -replace ' Disabled', "<font color=`"red`"><b> Disabled</b></font>"
        $body = $body -replace ' Enabled', "<font color=`"green`"><b> Enabled</b></font>"
        $body = $body -replace ' Locked out', "<font color=`"red`"><b> Locked out</b></font>"
        $body = $body -replace ' Lockouts', "<font color=`"red`"><b> Lockouts</b></font>"
        $body = $body -replace ' Unlocked', "<font color=`"green`"><b> Unlocked</b></font>"
        $body = $body -replace ' Reset', "<font color=`"blue`"><b> Reset</b></font>"
        $body += '</p>'
    } else {
        $body += '<br><i>No changes happend during that period.</i></p>'
    }
    return $body
}
function Set-EmailReportDetails {
    param(
        $FormattingOptions,
        $ReportOptions,
        $TimeToGenerate
    )
    $DateReport = get-date
    # HTML Report settings
    $Report = "<p style=`"background-color:white;font-family:$($FormattingOptions.FontFamily);font-size:$($FormattingOptions.FontSize)`">"
    $Report += "<strong>Report Time:</strong> $DateReport <br>"
    $Report += "<strong>Time to generate:</strong> $($TimeToGenerate.Hours) hours, $($TimeToGenerate.Minutes) minutes, $($TimeToGenerate.Seconds) seconds, $($TimeToGenerate.Milliseconds) milliseconds <br>"

    if ($PSVersionTable.Platform -ne 'Unix') {
        $Report += "<strong>Account Executing Report :</strong> $env:userdomain\$($env:username.toupper()) on $($env:ComputerName.toUpper()) <br>"
    } else {
        # needs filling in.
    }
    $Report += '<strong>Checking for monitored IPs :</strong>'
    $Report += '<ul>'
    foreach ($ip in $ReportOptions.MonitoredIps.Values) {
        $Report += "<li>ip:</strong> $ip</li>"
    }
    $Report += '</ul>'
    $Report += '</p>'
    return $Report
}
function Start-ReportBlackLists {
    [cmdletbinding()]
    param(
        $EmailParameters,
        $FormattingParameters,
        $ReportOptions,
        [switch] $OutputErrors
    )
    $Errors = @{
        Teams   = $false
        Slack   = $false
        Discord = $false
    }
    $EmailBody = Set-EmailHead -FormattingOptions $FormattingParameters
    $EmailBody += Set-EmailReportBranding -FormattingOptions $FormattingParameters


    $TeamID = Format-FirstXChars -Text $ReportOptions.NotificationsTeams.TeamsID -NumberChars 25
    $SlackID = Format-FirstXChars -Text $ReportOptions.NotificationsSlack.Uri -NumberChars 25
    $DiscordID = Format-FirstXChars -Text $ReportOptions.NotificationsDiscord.Uri -NumberChars 25

    Write-Verbose "Start-ReportBlackLists - TeamsID: $TeamID"
    Write-Verbose "Start-ReportBlackLists - SlackID: $SlackID"
    Write-Verbose "Start-ReportBlackLists - DiscordID: $DiscordID"

    $Ips = @()
    foreach ($ip in $ReportOptions.MonitoredIps.Values) {
        $Ips += $ip
    }
    $Time = Measure-Command -Expression {
        if ($null -eq $ReportOptions.SortBy) {
            $ReportOptions.SortBy = 'IsListed'
        }
        if ($null -eq $ReportOptions.SortDescending) {
            $ReportOptions.SortDescending = $true
        }

        if ($ReportOptions.NotificationsEmail.EmailAllResults) {
            $BlackListCheck = Search-BlackList -IP $Ips -SortBy $ReportOptions.SortBy -SortDescending:$ReportOptions.SortDescending -ReturnAll
        } else {
            $BlackListCheck = Search-BlackList -IP $Ips -SortBy $ReportOptions.SortBy -SortDescending:$ReportOptions.SortDescending
        }
    }
    $EmailBody += Set-EmailReportDetails -FormattingOptions $FormattingParameters -ReportOptions $ReportOptions -TimeToGenerate $Time
    $EmailBody += Set-EmailBody -TableData $BlackListCheck -TableWelcomeMessage 'Following blacklisted servers'

    if ($null -eq $ReportOptions.NotificationsEmail) {
        # Not upgraded config / Legacy config
        $ReportOptions.NotificationsEmail = @{
            Use                          = $true
            EmailPriorityWhenBlacklisted = $ReportOptions.EmailPriorityWhenBlacklisted
            EmailPriorityStandard        = $ReportOptions.EmailPriorityStandard
            EmailAllResults              = $ReportOptions.EmailAllResults
            EmailAlways                  = $ReportOptions.EmailAlways
        }
    }

    if ($BlackListCheck.IsListed -contains $true) {
        $EmailParameters.EmailPriority = $ReportOptions.NotificationsEmail.EmailPriorityWhenBlacklisted
    } else {
        $EmailParameters.EmailPriority = $ReportOptions.NotificationsEmail.EmailPriorityStandard
    }


    if ($ReportOptions.NotificationsEmail.Use) {
        if ($ReportOptions.EmailAlways -eq $true -or $BlackListCheck.IsListed -contains $true) {
            if ($FormattingParameters.CompanyBranding.Inline) {
                $SendMail = Send-Email -EmailParameters $EmailParameters -Body $EmailBody -InlineAttachments @{logo = $FormattingParameters.CompanyBranding.Logo} -Verbose
            } else {
                $SendMail = Send-Email -EmailParameters $EmailParameters -Body $EmailBody
            }
        }
    }

    if ($BlackListCheck.IsListed -contains $true) {
        $BlackListLimited = $BlackListCheck | Where-Object { $_.IsListed -eq $true }

        if ($ReportOptions.NotificationsTeams.Use) {
            [string] $MessageTitle = $ReportOptions.NotificationsTeams.MessageTitle
            [string] $ActivityImageLink = $ReportOptions.NotificationsTeams.MessageImageLink

            [RGBColors] $Color = [RGBColors]::Red
            $Sections = @()
            foreach ($Server in $BlackListLimited) {
                [string] $ActivityTitle = "Blacklisted IP **$($Server.IP)**"
                if ($ReportOptions.NotificationsTeams.MessageButtons) {
                    $Button1 = New-TeamsButton -Name "Check BlackList" -Link "https://mxtoolbox.com/SuperTool.aspx?action=blacklist%3a$($Server.Ip)&run=toolpage"
                    $Button2 = New-TeamsButton -Name "Check SMTP" -Link "https://mxtoolbox.com/SuperTool.aspx?action=smtp%3a$($Server.Ip)&run=toolpage"

                    $Sections += New-TeamsSection `
                        -ActivityTitle $ActivityTitle `
                        -ActivitySubtitle "Found on blacklist **$($Server.Blacklist)**" `
                        -ActivityImageLink $ActivityImageLink `
                        -ActivityText "Everybody panic!" `
                        -Buttons $Button1, $Button2
                } else {
                    $Sections += New-TeamsSection `
                        -ActivityTitle $ActivityTitle `
                        -ActivitySubtitle "Found on blacklist **$($Server.Blacklist)**" `
                        -ActivityImageLink $ActivityImageLink `
                        -ActivityText "Responses: $($Server.Answer)"
                }
            }

            try {
                $TeamsOutput = Send-TeamsMessage `
                    -URI $ReportOptions.NotificationsTeams.TeamsID `
                    -MessageTitle $MessageTitle `
                    -Color $Color `
                    -Sections $Sections `
                    -Supress $false
            } catch {
                $ErrorMessage = $_.Exception.Message -replace "`n", " " -replace "`r", " "
                Write-Warning "Couldn't send to Teams - Error occured: $ErrorMessage"
                $Errors.Teams = $true
            }
            #Write-Color @script:WriteParameters -Text "[i] Teams output: ", $Data -Color White, Yellow
        }
        if ($ReportOptions.NotificationsSlack.Use) {

            $MessageTitle = $ReportOptions.NotificationsSlack.MessageTitle
            [string] $ActivityImageLink = $ReportOptions.NotificationsSlack.MessageImageLink

            $Attachments = @()
            foreach ($Server in $BlackListLimited) {
                $Attachments += New-SlackMessageAttachment -Color $_PSSlackColorMap.red `
                    -Title "IP $($Server.IP) is Blacklisted" `
                    -TitleLink "https://mxtoolbox.com/SuperTool.aspx?action=blacklist%3a$($Server.Ip)&run=toolpage" `
                    -Text $ReportOptions.NotificationsSlack.MessageText `
                    -Pretext "Found on blacklist $($Server.Blacklist)" `
                    -Fallback 'Your client is bad'
            }

            try {
                $SlackOutput = New-SlackMessage -Attachments $Attachments `
                    -Channel $ReportOptions.NotificationsSlack.Channel `
                    -IconEmoji $ReportOptions.NotificationsSlack.MessageEmoji `
                    -AsUser `
                    -Username $ReportOptions.NotificationsSlack.MessageAsUser | `
                    Send-SlackMessage -Uri $ReportOptions.NotificationsSlack.URI
            } catch {
                $ErrorMessage = $_.Exception.Message -replace "`n", " " -replace "`r", " "
                Write-Warning "Couldn't send to Slack - Error occured: $ErrorMessage"
                $Errors.Slack = $true
            }
            #Write-Color @script:WriteParameters -Text "[i] Slack output: ", $Data -Color White, Yellow
        }

        if ($ReportOptions.NotificationsDiscord.Use) {
            if ($null -eq $ReportOptions.NotificationsDiscord.MessageInline) {
                $ReportOptions.NotificationsDiscord.MessageInline = $false
            }

            try {
                $Facts = foreach ($Server in $BlackListLimited) {
                    [string] $ActivityTitle = "Blacklisted IP $($Server.IP)"
                    [string] $ActivityValue = "Found on blacklist $($Server.Blacklist)"

                    New-DiscordFact -Name $ActivityTitle -Value $ActivityValue -Inline $ReportOptions.NotificationsDiscord.MessageInline
                }

                $Thumbnail = New-DiscordThumbnail -Url $ReportOptions.NotificationsDiscord.MessageImageLink
                $Author = New-DiscordAuthor -Name 'PSBlacklistChecker' -IconUrl  $ReportOptions.NotificationsDiscord.MessageImageLink
                $Section = New-DiscordSection -Title $ReportOptions.NotificationsDiscord.MessageText `
                    -Description '' `
                    -Facts $Facts `
                    -Color $ReportOptions.NotificationsDiscord.MessageColor `
                    -Author $Author `
                    -Thumbnail $Thumbnail #-Image $Thumbnail

                Send-DiscordMessage -WebHookUrl $ReportOptions.NotificationsDiscord.Uri `
                    -Sections $Section `
                    -AvatarName $ReportOptions.NotificationsDiscord.MessageAsUser `
                    -AvatarUrl $ReportOptions.NotificationsDiscord.MessageAsUserImage -Verbose

            } catch {
                $ErrorMessage = $_.Exception.Message -replace "`n", " " -replace "`r", " "
                Write-Warning "Couldn't send to Discord - Error occured: $ErrorMessage"
                $Errors.Discord = $true
            }
        }
        if ($OutputErrors) {
            return $Errors
        }
    }
}


Export-ModuleMember `
    -Function @('Search-BlackList','Start-ReportBlackLists') `
    -Alias @()