mxtoolbox.com Open in urlscan Pro
13.35.51.118  Public Scan

URL: https://mxtoolbox.com/blacklists.aspx
Submission: On March 28 via manual from JP — Scanned from JP

Form analysis 1 forms found in the DOM

POST /Public/Content/Toolhandler.aspx?command=blacklist

<form method="post" action="/Public/Content/Toolhandler.aspx?command=blacklist" id="aspnetForm" class="mx-master-form ng-pristine ng-valid">
  <div class="aspNetHidden">
    <input type="hidden" name="__EVENTTARGET" id="__EVENTTARGET" value="">
    <input type="hidden" name="__EVENTARGUMENT" id="__EVENTARGUMENT" value="">
    <input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE"
      value="Gr12Xa9Xe1ftXX6nI29v6TtRWF2coxMuD1Hd1KympvJ3vEH9Yv8Di4hV5lx44M7F6UtFJZKVnBU3t3g+NDWINLDGnyR3CK6cUfvQSWxww4vjXFlh6FmW8CR/8njrc6TVtr+Id7iEiNj3BJ3UupDUUpPRqvnw+4TAYIVnDvDcQnQiFil4bmsQK2ag7yqFFhJeteX+yf7DusRRH62H2BmllOK48m9TdcC+y5Xq6WYqrruvTyd+">
  </div>
  <script type="text/javascript">
    //<![CDATA[
    var theForm = document.forms['aspnetForm'];
    if (!theForm) {
      theForm = document.aspnetForm;
    }

    function __doPostBack(eventTarget, eventArgument) {
      if (!theForm.onsubmit || (theForm.onsubmit() != false)) {
        theForm.__EVENTTARGET.value = eventTarget;
        theForm.__EVENTARGUMENT.value = eventArgument;
        theForm.submit();
      }
    }
    //]]>
  </script>
  <script src="/WebResource.axd?d=pynGkmcFUV13He1Qd6_TZGFX1c6f9O2ssNbm5tpBIdHiB-umpXellstullH8eB3DFLrLMQ2&amp;t=637321737772739184" type="text/javascript"></script>
  <script src="/ScriptResource.axd?d=NJmAwtEo3Ipnlaxl6CMhvoFwCknWixWR9JXihFHHpN5tk_Ul4bjvu1M9LgPbp9ZpujbdnhDx_Pibns327ZZkZNSHYpFuV1sqHUM8BIsi4mENh8fiWEXbPNDyp9xj7rYTzabCHs_SAojWggLf4Rr57KT_fuA1&amp;t=fffffffff27ac6e9" type="text/javascript"></script>
  <script src="/ScriptResource.axd?d=dwY9oWetJoJoVpgL6Zq8OBHfClJC8SRUySaQieajdjSsC3xzuuLpvBZP3GBr1PRTcCNxyqHvkE0n2n37Ec8sNWbLgyhiK304_Hv5E-p8xAHmWPAmcvYXtpa-bj8Ejq1rMzfXFX8bseC6R0Zcacu8LOdB7Yc1&amp;t=fffffffff27ac6e9" type="text/javascript"></script>
  <div class="aspNetHidden">
    <input type="hidden" name="__VIEWSTATEGENERATOR" id="__VIEWSTATEGENERATOR" value="B18E989E">
    <input type="hidden" name="__EVENTVALIDATION" id="__EVENTVALIDATION"
      value="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">
  </div>
  <!-- EnablePartialRendering is necessary when controls have updatepanels -->
  <script type="text/javascript">
    //<![CDATA[
    Sys.WebForms.PageRequestManager._initialize('ctl00$ScriptManager1', 'aspnetForm', [], [], [], 90, 'ctl00');
    //]]>
  </script>
  <div>
    <div id="ctl00_divTopMenu" ng-controller="TopNavController as vm" class="ng-scope">
      <div location="tools" class="ng-isolate-scope">
        <style>
          /* Apply these once we install this menu */
          .masthead .navbar-toggle {
            margin-top: 8px !important;
          }

          .masthead .navbar-brand {
            margin-left: 12px !important;
          }

          .masthead .logo {
            background-position-y: bottom !important;
            background-size: 172px !important;
            width: 172px !important;
          }

          .secondhead .navbar-toggle {
            margin-top: 6px !important;
          }

          /* Move this to its own css file once we install this menu */
          /* Some may have content TopMenu.css */
          .masthead .nav>li.separator {
            margin: 0 15px;
          }

          .masthead .item-top.item-top-user {
            margin-left: 12px;
          }

          .masthead .item-top.item-top-user>a {
            color: #777 !important;
            padding-left: 0px !important
          }

          .secondhead .item-black>a {
            font-weight: 700 !important;
            cursor: pointer;
          }
        </style>
        <nav class="navbar navbar-fixed masthead" style="border-radius:unset;">
          <div class="container-fluid">
            <div class="navbar-header">
              <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#top-navbar-collapse" aria-expanded="false" style="margin-top:1px;">
                <span class="sr-only">Toggle navigation</span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
              </button>
              <a href="/">
                    <div class="logo navbar-brand" ng-class="{'working':vm.isWorking}"></div>
                </a>
            </div>
            <div class="collapse navbar-collapse" id="top-navbar-collapse">
              <ul class="nav navbar-nav navbar-right">
                <!-- ngRepeat: item in vm.menu -->
                <li ng-repeat="item in vm.menu" class="item-top navbar-item-pricing " ng-hide="item.hide &amp;&amp; !item.active">
                  <a ng-href="/Public/UpgradeV2.aspx?feature=no-feature-selected&amp;source=pricing" class="ng-binding" href="/Public/UpgradeV2.aspx?feature=no-feature-selected&amp;source=pricing">Pricing</a></li>
                <!-- end ngRepeat: item in vm.menu -->
                <li ng-repeat="item in vm.menu" class="item-top navbar-item-tools active" ng-hide="item.hide &amp;&amp; !item.active"><a ng-href="/SuperTool.aspx" class="ng-binding" href="/SuperTool.aspx">Tools</a></li>
                <!-- end ngRepeat: item in vm.menu -->
                <li ng-repeat="item in vm.menu" class="item-top navbar-item-delivery " ng-hide="item.hide &amp;&amp; !item.active"><a ng-href="/delivery?source=navbar" class="ng-binding" href="/delivery?source=navbar">Delivery Center</a></li>
                <!-- end ngRepeat: item in vm.menu -->
                <li ng-repeat="item in vm.menu" class="item-top navbar-item-monitoring " ng-hide="item.hide &amp;&amp; !item.active"><a ng-href="/monitoring" class="ng-binding" href="/monitoring">Monitoring</a></li>
                <!-- end ngRepeat: item in vm.menu -->
                <li ng-repeat="item in vm.menu" class="item-top navbar-item-products " ng-hide="item.hide &amp;&amp; !item.active"><a ng-href="/c/mxtoolboxproducts" class="ng-binding" href="/c/mxtoolboxproducts">Products</a></li>
                <!-- end ngRepeat: item in vm.menu -->
                <li ng-repeat="item in vm.menu" class="item-top navbar-item-support " ng-hide="item.hide &amp;&amp; !item.active"><a ng-href="/support" class="ng-binding" href="/support">Support</a></li><!-- end ngRepeat: item in vm.menu -->
                <li ng-repeat="item in vm.menu" class="item-top navbar-item-user  ng-hide" ng-hide="item.hide &amp;&amp; !item.active"><a ng-href="/user" class="ng-binding" href="/user">User</a></li><!-- end ngRepeat: item in vm.menu -->
                <li class="separator hide-collapse"></li>
                <!-- ngIf: !vm.user -->
                <!-- ngIf: vm.user && !vm.user.IsLoggedIn -->
                <li class="item-top navbar-item-login item-top-user ng-scope" ng-if="vm.user &amp;&amp; !vm.user.IsLoggedIn"><a id="top-nav-login" href="/Public/Login.aspx">Login</a></li><!-- end ngIf: vm.user && !vm.user.IsLoggedIn -->
                <!-- ngIf: vm.user.IsLoggedIn -->
              </ul>
            </div>
          </div>
        </nav>
        <!-- ngIf: !vm.hideSecondNav -->
        <nav class="navbar navbar-inverse navbar-fixed secondhead ng-scope" style="border-radius:unset;" ng-if="!vm.hideSecondNav">
          <div class="container-fluid">
            <div class="navbar-header">
              <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#second-navbar-collapse" aria-expanded="false" style="margin-top:1px;">
                <span class="sr-only">Toggle navigation</span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
                <span class="icon-bar"></span>
              </button>
            </div>
            <div class="collapse navbar-collapse" id="second-navbar-collapse">
              <ul class="nav navbar-nav navbar-left">
                <!-- ngRepeat: subitem in vm.activeNav.sub.right --><!-- ngIf: vm.location == 'user' --><!-- end ngRepeat: subitem in vm.activeNav.sub.right -->
                <!-- ngRepeat: subitem in vm.activeNav.sub.left --><!-- ngIf: vm.activeNav.sub.left -->
                <li ng-if="vm.activeNav.sub.left" ng-repeat="subitem in vm.activeNav.sub.left" ng-class="{'active': vm.SelectedSubNav === subitem}" class="item-black subnav-item-supertool">
                  <a href="/SuperTool.aspx" ng-href="/SuperTool.aspx" ng-click="vm.ClickSubItem(this, $event, subitem);" class="ng-binding">SuperTool</a></li>
                <!-- end ngIf: vm.activeNav.sub.left --><!-- end ngRepeat: subitem in vm.activeNav.sub.left --><!-- ngIf: vm.activeNav.sub.left -->
                <li ng-if="vm.activeNav.sub.left" ng-repeat="subitem in vm.activeNav.sub.left" ng-class="{'active': vm.SelectedSubNav === subitem}" class="item-black subnav-item-mxlookup">
                  <a href="/MXLookup.aspx" ng-href="/MXLookup.aspx" ng-click="vm.ClickSubItem(this, $event, subitem);" class="ng-binding">MX Lookup</a></li>
                <!-- end ngIf: vm.activeNav.sub.left --><!-- end ngRepeat: subitem in vm.activeNav.sub.left --><!-- ngIf: vm.activeNav.sub.left -->
                <li ng-if="vm.activeNav.sub.left" ng-repeat="subitem in vm.activeNav.sub.left" ng-class="{'active': vm.SelectedSubNav === subitem}" class="item-black subnav-item-blacklists active">
                  <a href="/blacklists.aspx" ng-href="/blacklists.aspx" ng-click="vm.ClickSubItem(this, $event, subitem);" class="ng-binding">Blacklists</a></li>
                <!-- end ngIf: vm.activeNav.sub.left --><!-- end ngRepeat: subitem in vm.activeNav.sub.left --><!-- ngIf: vm.activeNav.sub.left -->
                <li ng-if="vm.activeNav.sub.left" ng-repeat="subitem in vm.activeNav.sub.left" ng-class="{'active': vm.SelectedSubNav === subitem}" class="item-black subnav-item-dmarc">
                  <a href="/DMARC.aspx" ng-href="/DMARC.aspx" ng-click="vm.ClickSubItem(this, $event, subitem);" class="ng-binding">DMARC</a></li>
                <!-- end ngIf: vm.activeNav.sub.left --><!-- end ngRepeat: subitem in vm.activeNav.sub.left --><!-- ngIf: vm.activeNav.sub.left -->
                <li ng-if="vm.activeNav.sub.left" ng-repeat="subitem in vm.activeNav.sub.left" ng-class="{'active': vm.SelectedSubNav === subitem}" class="item-black subnav-item-diagnostics">
                  <a href="/diagnostic.aspx" ng-href="/diagnostic.aspx" ng-click="vm.ClickSubItem(this, $event, subitem);" class="ng-binding">Diagnostics</a></li>
                <!-- end ngIf: vm.activeNav.sub.left --><!-- end ngRepeat: subitem in vm.activeNav.sub.left --><!-- ngIf: vm.activeNav.sub.left -->
                <li ng-if="vm.activeNav.sub.left" ng-repeat="subitem in vm.activeNav.sub.left" ng-class="{'active': vm.SelectedSubNav === subitem}" class="item-black subnav-item-domain">
                  <a href="/emailhealth" ng-href="/emailhealth" ng-click="vm.ClickSubItem(this, $event, subitem);" class="ng-binding">Email Health</a></li>
                <!-- end ngIf: vm.activeNav.sub.left --><!-- end ngRepeat: subitem in vm.activeNav.sub.left --><!-- ngIf: vm.activeNav.sub.left -->
                <li ng-if="vm.activeNav.sub.left" ng-repeat="subitem in vm.activeNav.sub.left" ng-class="{'active': vm.SelectedSubNav === subitem}" class="item-black subnav-item-dnslookup">
                  <a href="/DnsLookup.aspx" ng-href="/DnsLookup.aspx" ng-click="vm.ClickSubItem(this, $event, subitem);" class="ng-binding">DNS Lookup</a></li>
                <!-- end ngIf: vm.activeNav.sub.left --><!-- end ngRepeat: subitem in vm.activeNav.sub.left --><!-- ngIf: vm.activeNav.sub.left -->
                <li ng-if="vm.activeNav.sub.left" ng-repeat="subitem in vm.activeNav.sub.left" ng-class="{'active': vm.SelectedSubNav === subitem}" class="item-black subnav-item-headers">
                  <a href="/EmailHeaders.aspx" ng-href="/EmailHeaders.aspx" ng-click="vm.ClickSubItem(this, $event, subitem);" class="ng-binding">Analyze Headers</a></li>
                <!-- end ngIf: vm.activeNav.sub.left --><!-- end ngRepeat: subitem in vm.activeNav.sub.left -->
              </ul>
              <ul class="nav navbar-nav navbar-right">
                <!-- ngRepeat: subitem in vm.activeNav.sub.right --><!-- ngIf: vm.activeNav.sub.right && vm.location != 'user' -->
                <li ng-if="vm.activeNav.sub.right &amp;&amp; vm.location != 'user'" ng-repeat="subitem in vm.activeNav.sub.right" ng-class="{'active': vm.SelectedSubNav === subitem}" class="item-black subnav-item-alltools">
                  <a href="/NetworkTools.aspx" ng-href="/NetworkTools.aspx" ng-click="vm.ClickSubItem(this, $event, subitem);" class="ng-binding">All Tools</a></li>
                <!-- end ngIf: vm.activeNav.sub.right && vm.location != 'user' --><!-- end ngRepeat: subitem in vm.activeNav.sub.right -->
              </ul>
            </div>
          </div>
        </nav><!-- end ngIf: !vm.hideSecondNav -->
      </div>
    </div>
    <div class="container-fluid mx-master-content">
      <noscript> Javascript is disabled. Javascript is required for this site. </noscript>
      <div id="ctl00_divDisabledUser" style="display: none">
        <div id="pnlDisabledUser" class="alert alert-error no-margin square">
          <span id="lblDisabledUser" style="padding: 0px 10px;"></span>
          <a id="lbDisabledUser" class="btn btn-danger" href="#">Fix the Problem</a>
        </div>
      </div>
      <div class="row-fluid">
        <div id="ctl00_divPlaceHolder" class="mx-placeholder-content">
          <div id="ctl00_ContentPlaceHolder1_pnlToolHandler" class="tools_lookup">
            <!-- DefaultButton="btnAction" -->
            <div class="search panel panel-default toolhandler-search-panel">
              <div class="panel-heading">
                <h1 class="search">
                  <img id="ctl00_ContentPlaceHolder1_ucToolhandler_imgToolIcon" src="https://images.mxtoolbox.com/public/images/toolicons/blacklist.png">
                  <span id="ctl00_ContentPlaceHolder1_ucToolhandler_ltlTitle">Blacklists</span>
                </h1>
              </div>
              <hr>
              <div class="divInput panel-body">
                <b class="caret-large"></b>
                <div class="form-search"></div>
                <div class="tools_lookup_label">
                  <div style="display: inline-block">
                    <span class="inputTypeTitle" style="font-weight: bold"> Server IP or Domain </span>
                    <input name="ctl00$ContentPlaceHolder1$ucToolhandler$txtToolInput" type="text" id="ctl00_ContentPlaceHolder1_ucToolhandler_txtToolInput" class="tools_lookup_textbox form-control">
                  </div>
                  <input type="submit" name="ctl00$ContentPlaceHolder1$ucToolhandler$btnAction" value="Blacklist Check" id="ctl00_ContentPlaceHolder1_ucToolhandler_btnAction" class="btn btn-mx">
                  <div class="extra-info-section" style="display: inline-block">
                    <a id="ctl00_ContentPlaceHolder1_ucToolhandler_hlExtraButton1" class="btn btn-info" href="https://mxtoolbox.com/c/products/deliverycenter?source=toolhandler-dmarc" style="margin-bottom: 4px;">Solve Email Delivery Problems</a>
                    <input type="hidden" name="ctl00$ContentPlaceHolder1$ucToolhandler$hfABhelper" id="hfABhelper">
                  </div>
                </div>
              </div>
            </div>
            <!-- New header -->
            <div class="p10">
              <div class="tools_description">
                <h3>ABOUT BLACKLIST CHECK</h3>
                <p> The blacklist check will test a mail server IP address against <span id="ctl00_ContentPlaceHolder1_lblNumberofBlackLists">over 100</span> DNS based email blacklists.&nbsp;(Commonly called Realtime blacklist, DNSBL
                  or&nbsp;RBL).&nbsp; If your mail server has been blacklisted, some email you send may not be delivered.&nbsp; Email blacklists are a common way of reducing spam.&nbsp; If you don't know your mail server's address, start with a
                  <a href="https://mxtoolbox.com/"><strong>MX Lookup.</strong></a> &nbsp; Or, just send an email to
                  <a href="https://mail.google.com/mail/?view=cm&amp;fs=1&amp;tf=1&amp;to=ping@tools.mxtoolbox.com" target="_blank"><strong>ping@tools.mxtoolbox.com</strong></a></p>
                <p><a href="https://mxtoolbox.com/productinfo/serviceprovider" class="link_have-more-than-255">Have more than 255 addresses?</a></p>
                <p id="blaclklistswecheck" style="display:none;"><a href="https://mxtoolbox.com/Problem/blacklist">Blacklists we check</a> </p>
              </div>
              <div style="padding-left: 20px;">
                <a id="ctl00_ContentPlaceHolder1_ucToolhandler_hlBlacklistsWeCheck" class="text-md" href="/problem/blacklist/">View the 100+ blacklists we check.</a>
              </div>
            </div>
            <script type="text/javascript">
              var ctl = document.getElementById('ctl00_ContentPlaceHolder1_ucToolhandler_txtToolInput');
              if (ctl != null) ctl.focus();
            </script>
            <style>
              .icon-mx-admin {
                color: rgb(228, 150, 58);
                text-shadow: black 1px 1px;
                position: absolute;
                z-index: 100;
                left: 3px;
                top: 20px;
              }
            </style>
            <script>
              (function loadAdmin(MXT) {
                if (MXT.User && MXT.User.isAdmin) {
                  $('.icon-mx-admin').show();
                }
              })(window.MXT || (window.MXT = {}));
            </script>
            <div id="ctl00_ContentPlaceHolder1_toolhandler0_divContent" class="mx-slot-container" style="position:relative;width:100%;">
            </div>
          </div>
          <script type="text/javascript">
            // leave javascript below the form
            function redirect() {
              if (window.location.href.toLowerCase().includes("toolhandler")) {
                // We want to stop people from using the ToolHandler.apx url directly
                // Case statement was generated by the SQL -- 
                // SELECT 'case ''' + RTRIM(Command) + ''':\n' + '    window.location=''https://mxtoolbox.com/' + ToolPage + ''';\n    break;' 
                // FROM mxt_LookupActionProperties
                // WHERE Visible = 1
                var command = getParameterByName("command");
                switch (command) {
                  case 'a':
                    window.location = 'https://mxtoolbox.com/DnsLookup.aspx';
                    break;
                  case 'aaaa':
                    window.location = 'https://mxtoolbox.com/IPv6.aspx';
                    break;
                  case 'arin':
                    window.location = 'https://mxtoolbox.com/arin.aspx';
                    break;
                  case 'asn':
                    window.location = 'https://mxtoolbox.com/asn.aspx';
                    break;
                  case 'blacklist':
                    window.location = 'https://mxtoolbox.com/blacklists.aspx';
                    break;
                  case 'blocklist':
                    window.location = 'https://mxtoolbox.com/blocklists.aspx';
                    break;
                  case 'cert':
                    window.location = 'https://mxtoolbox.com/CERT.aspx';
                    break;
                  case 'cname':
                    window.location = 'https://mxtoolbox.com/CnameLookup.aspx';
                    break;
                  case 'dkim':
                    window.location = 'https://mxtoolbox.com/dkim.aspx';
                    break;
                  case 'dmarc':
                    window.location = 'https://mxtoolbox.com/dmarc.aspx';
                  case 'bimi':
                    window.location = 'https://mxtoolbox.com/bimi.aspx';
                    break;
                  case 'dns':
                    window.location = 'https://mxtoolbox.com/DNSCheck.aspx';
                    break;
                  case 'dnskey':
                    window.location = 'https://mxtoolbox.com/DNSKey.aspx';
                    break;
                  case 'domain':
                    window.location = 'https://mxtoolbox.com/emailhealth';
                    break;
                  case 'ds':
                    window.location = 'https://mxtoolbox.com/ds.aspx';
                    break;
                  case 'http':
                    window.location = 'https://mxtoolbox.com/HTTPLookup.aspx';
                    break;
                  case 'https':
                    window.location = 'https://mxtoolbox.com/HTTPSLookup.aspx';
                    break;
                  case 'ipseckey':
                    window.location = 'https://mxtoolbox.com/IPSECKey.aspx';
                    break;
                  case 'loc':
                    window.location = 'https://mxtoolbox.com/Location.aspx';
                    break;
                  case 'mx':
                    window.location = 'https://mxtoolbox.com/';
                    break;
                  case 'nsec':
                    window.location = 'https://mxtoolbox.com/nsec.aspx';
                    break;
                  case 'nsec3':
                    window.location = 'https://mxtoolbox.com/nsec3.aspx';
                    break;
                  case 'nsec3param':
                    window.location = 'https://mxtoolbox.com/nsec3param.aspx';
                    break;
                  case 'eprovider':
                    window.location = 'https://mxtoolbox.com/EProvider.aspx';
                    break;
                  case 'ping':
                    window.location = 'https://mxtoolbox.com/PingLookup.aspx';
                    break;
                  case 'ptr':
                    window.location = 'https://mxtoolbox.com/ReverseLookup.aspx';
                    break;
                  case 'rrsig':
                    window.location = 'https://mxtoolbox.com/rrsig.aspx';
                    break;
                  case 'scan':
                    window.location = 'https://mxtoolbox.com/PortScan.aspx';
                    break;
                  case 'smtp':
                    window.location = 'https://mxtoolbox.com/diagnostic.aspx';
                    break;
                  case 'soa':
                    window.location = 'https://mxtoolbox.com/SOALookup.aspx';
                    break;
                  case 'spf':
                    window.location = 'https://mxtoolbox.com/spf.aspx';
                    break;
                  case 'srv':
                    window.location = 'https://mxtoolbox.com/SRVLookup.aspx';
                    break;
                  case 'tcp':
                    window.location = 'https://mxtoolbox.com/TCPLookup.aspx';
                    break;
                  case 'trace':
                    window.location = 'https://mxtoolbox.com/TraceRouteLookup.aspx';
                    break;
                  case 'txt':
                    window.location = 'https://mxtoolbox.com/TXTLookup.aspx';
                    break;
                  case 'whatismyip':
                    window.location = 'https://mxtoolbox.com/whatismyip';
                    break;
                  case 'whois':
                    window.location = 'https://mxtoolbox.com/Whois.aspx';
                    break;
                }
              }
              redirect(); //Now call the function        
            }
            //Below is added for AB testing and being able to pinpoint tool handler pages easily
            $(document).ready(function() {
              if (typeof(dataLayer) !== "undefined") {
                dataLayer.push({
                  'event': 'optimize.page_toolHandler'
                });
              }
            });
          </script>
          <div id="ad_variation" class="mx-ad-content text-right" style="display: none">
            <div class="supertool_ad_dynamic" style="">
              <div class="st-Ad-Container template_ad_anon">
                <div class="st-Ad-Section clickable" style="margin-bottom: 0px !important;"
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Server IP or Domain
Solve Email Delivery Problems


ABOUT BLACKLIST CHECK

The blacklist check will test a mail server IP address against over 100 DNS
based email blacklists. (Commonly called Realtime blacklist, DNSBL or RBL).  If
your mail server has been blacklisted, some email you send may not be
delivered.  Email blacklists are a common way of reducing spam.  If you don't
know your mail server's address, start with a MX Lookup.   Or, just send an
email to ping@tools.mxtoolbox.com

Have more than 255 addresses?

Blacklists we check

View the 100+ blacklists we check.



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Round-trip email server monitoring for latency and email deliverability issues


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Run Bulk lists of IPs and Domains Blacklist, MX/NS/A Record, GeoIP, & more data

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