ciaranmahoney

function MXLookup(domain) {
  
  try {
    var url = "https://dns.google.com/resolve?name=%FQDN%&type=MX".replace("%FQDN%",domain);
  
    //var url = "https://dns.google.com/resolve?name=e-mercy.com&type=MX"; // USED FOR TESTING ONLY
    
    Utilities.sleep(100);
    var result = UrlFetchApp.fetch(url,{muteHttpExceptions:true});
    var rc = result.getResponseCode();