[SOLVED] how to trigger Jenkins build job from XL Release Task

We have been using 'XL Release' server (XLR) for projects' release management and Jenkins for continuous Integration of projects from GitHub. I am trying to create a Jenkins task for one Release on XLR by providing the basic configuration like Jenkins URL/user name/password and the Jenkins job name which are mandatory.

Now when I am starting the Task in XLR, it gives the following Error message as below:

"Failed to connect at http://[Jenkins server]/job//build. Status: 405"

Along with the response looks like the below script:

&lt;!DOCTYPE html&gt;&lt;html&gt;&lt;head resURL="/static/84561821"&gt;


&lt;title&gt;Form post required [Jenkins]&lt;/title&gt;&lt;link rel="stylesheet" type="text/css" href="/static/84561821/css/style.css" /&gt;&lt;link rel="stylesheet" type="text/css" href="/static/84561821/css/color.css" /&gt;&lt;link rel="stylesheet" type="text/css" href="/static/84561821/css/responsive-grid.css" /&gt;&lt;link rel="shortcut icon" type="image/vnd.microsoft.icon" href="/static/84561821/favicon.ico" /&gt;&lt;script&gt;var isRunAsTest=false; var rootURL=""; var resURL="/static/84561821";&lt;/script&gt;&lt;script src="/static/84561821/scripts/prototype.js" type="text/javascript"&gt;&lt;/script&gt;&lt;script src="/static/84561821/scripts/behavior.js" type="text/javascript"&gt;&lt;/script&gt;&lt;script src='/adjuncts/84561821/org/kohsuke/stapler/bind.js' type='text/javascript'&gt;&lt;/script&gt;&lt;script src="/static/84561821/scripts/yui/yahoo/yahoo-min.js"&gt;&lt;/script&gt;&lt;script src="/static/84561821/scripts/yui/dom/dom-min.js"&gt;&lt;/script&gt;&lt;script src="/static/84561821/scripts/yui/event/event-min.js"&gt;&lt;/script&gt;&lt;script src="/static/84561821/scripts/yui/animation/animation-min.js"&gt;&lt;/script&gt;&lt;script src="/static/84561821/scripts/yui/dragdrop/dragdrop-min.js"&gt;&lt;/script&gt;&lt;script src="/static/84561821/scripts/yui/container/container-min.js"&gt;&lt;/script&gt;&lt;script src="/static/84561821/scripts/yui/connection/connection-min.js"&gt;&lt;/script&gt;&lt;script src="/static/84561821/scripts/yui/datasource/datasource-min.js"&gt;&lt;/script&gt;&lt;script src="/static/84561821/scripts/yui/autocomplete/autocomplete-min.js"&gt;&lt;/script&gt;&lt;script src="/static/84561821/scripts/yui/menu/menu-min.js"&gt;&lt;/script&gt;&lt;script src="/static/84561821/scripts/yui/element/element-min.js"&gt;&lt;/script&gt;&lt;script src="/static/84561821/scripts/yui/button/button-min.js"&gt;&lt;/script&gt;&lt;script src="/static/84561821/scripts/yui/storage/storage-min.js"&gt;&lt;/script&gt;&lt;script src="/static/84561821/scripts/hudson-behavior.js" type="text/javascript"&gt;&lt;/script&gt;&lt;script src="/static/84561821/scripts/sortable.js" type="text/javascript"&gt;&lt;/script&gt;&lt;script&gt;crumb.init("", "");&lt;/script&gt;&lt;link rel="stylesheet" type="text/css" href="/static/84561821/scripts/yui/container/assets/container.css" /&gt;&lt;link rel="stylesheet" type="text/css" href="/static/84561821/scripts/yui/assets/skins/sam/skin.css" /&gt;&lt;link rel="stylesheet" type="text/css" href="/static/84561821/scripts/yui/container/assets/skins/sam/container.css" /&gt;&lt;link rel="stylesheet" type="text/css" href="/static/84561821/scripts/yui/button/assets/skins/sam/button.css" /&gt;&lt;link rel="stylesheet" type="text/css" href="/static/84561821/scripts/yui/menu/assets/skins/sam/menu.css" /&gt;&lt;link title="Jenkins" rel="search" type="application/opensearchdescription+xml" href="/opensearch.xml" /&gt;&lt;meta name="ROBOTS" content="INDEX,NOFOLLOW" /&gt;&lt;script src="/static/84561821/scripts/yui/cookie/cookie-min.js"&gt;&lt;/script&gt;&lt;/head&gt;&lt;body id="jenkins" data-version="jenkins-1.612" class="yui-skin-sam jenkins-1.612"&gt;&lt;a href="#skip2content" class="skiplink"&gt;Skip to content&lt;/a&gt;&lt;div id="page-head"&gt;&lt;div id="header"&gt;&lt;div class="logo"&gt;&lt;a id="jenkins-home-link" href="/"&gt;&lt;img id="jenkins-head-icon" alt="title" src="/static/84561821/images/headshot.png" /&gt;&lt;img id="jenkins-name-icon" height="34" alt="title" width="139" src="/static/84561821/images/title.png" /&gt;&lt;/a&gt;&lt;/div&gt;&lt;div class="login"&gt; &lt;span style="white-space:nowrap"&gt;&lt;a class="model-link inside inverse" href="/user/admin"&gt;&lt;b&gt;Admin&lt;/b&gt;&lt;/a&gt;
                |
                &lt;a href="/logout"&gt;&lt;b&gt;log out&lt;/b&gt;&lt;/a&gt;&lt;/span&gt;&lt;/div&gt;&lt;div class="searchbox hidden-xs"&gt;&lt;form style="position:relative;" name="search" action="/job/XLRConnect/search/" class="no-json" method="get"&gt;&lt;div id="search-box-minWidth"&gt;&lt;/div&gt;&lt;div id="search-box-sizer"&gt;&lt;/div&gt;&lt;div id="searchform"&gt;&lt;input id="search-box" placeholder="search" name="q" class="has-default-text" /&gt; &lt;a href="http://wiki.jenkins-ci.org/display/JENKINS/Search+Box"&gt;&lt;img style="width: 16px; height: 16px; " class="icon-help icon-sm" src="/static/84561821/images/16x16/help.png" /&gt;&lt;/a&gt;&lt;div id="search-box-completion"&gt;&lt;/div&gt;&lt;script&gt;createSearchBox("/job/XLRConnect/search/");&lt;/script&gt;&lt;/div&gt;&lt;/form&gt;&lt;/div&gt;&lt;/div&gt;&lt;div id="breadcrumbBar"&gt;&lt;tr id="top-nav"&gt;&lt;td id="left-top-nav" colspan="2"&gt;&lt;link rel='stylesheet' href='/adjuncts/84561821/lib/layout/breadcrumbs.css' type='text/css' /&gt;&lt;script src='/adjuncts/84561821/lib/layout/breadcrumbs.js' type='text/javascript'&gt;&lt;/script&gt;&lt;div class="top-sticker noedge"&gt;&lt;div class="top-sticker-inner"&gt;&lt;div id="right-top-nav"&gt;&lt;div id="right-top-nav"&gt;&lt;div class="smallfont"&gt;&lt;a href="?auto_refresh=true"&gt;ENABLE AUTO REFRESH&lt;/a&gt;&lt;/div&gt;&lt;/div&gt;&lt;/div&gt;&lt;ul id="breadcrumbs"&gt;&lt;li class="item"&gt;&lt;a class="model-link inside" href="/"&gt;Jenkins&lt;/a&gt;&lt;/li&gt;&lt;li class="children" href="/"&gt;&lt;/li&gt;&lt;li class="item"&gt;&lt;a class="model-link inside" href="/job/XLRConnect/"&gt;XLRConnect&lt;/a&gt;&lt;/li&gt;&lt;li class="children" href="/job/XLRConnect/"&gt;&lt;/li&gt;&lt;/ul&gt;&lt;div id="breadcrumb-menu-target"&gt;&lt;/div&gt;&lt;/div&gt;&lt;/div&gt;&lt;/td&gt;&lt;/tr&gt;&lt;/div&gt;&lt;/div&gt;&lt;div id="page-body"&gt;&lt;div class="row"&gt;&lt;div id="side-panel"&gt;&lt;div id="side-panel-content"&gt;&lt;/div&gt;&lt;/div&gt;&lt;div id="main-panel"&gt;&lt;div id="main-panel-content"&gt;&lt;a name="skip2content"&gt;&lt;/a&gt;&lt;p&gt;You must use POST method to trigger builds. (From scripts you may instead pass a per-project authentication token, or authenticate with your API token.) If you see this page, it may be because a plugin offered a GET link; file a bug report for that plugin.&lt;/p&gt;&lt;form method="POST"&gt;&lt;input value="Proceed" type="submit" /&gt;&lt;/form&gt;&lt;/div&gt;&lt;/div&gt;&lt;/div&gt;&lt;/div&gt;&lt;div id="footer-container" class="hidden-xs"&gt;&lt;div id="footer"&gt;&lt;span class="page_generated"&gt;
      Page generated:
      May 15, 2015 7:19:33 AM&lt;/span&gt;&lt;span class="rest_api"&gt;&lt;a href="api/"&gt;REST API&lt;/a&gt;&lt;/span&gt;&lt;span class="jenkins_ver"&gt;&lt;a href="http://jenkins-ci.org/"&gt;Jenkins ver. 1.612&lt;/a&gt;&lt;/span&gt;&lt;div id="l10n-dialog" class="dialog"&gt;&lt;/div&gt;&lt;div id="l10n-footer" style="display:none; float:left"&gt;&lt;a href="#" onclick="return showTranslationDialog();"&gt;&lt;img src="/static/84561821/plugin/translation/flags.png" /&gt;
  Help us localize this page
&lt;/a&gt;&lt;/div&gt;&lt;script&gt;var footer = document.getElementById('l10n-footer');
var f = document.getElementById('footer');
f.insertBefore(footer,f.firstChild);
footer.style.display="block";

var translation={}; 
translation.bundles = "2/IQrALgQj5lxSaSGgxqQQkSUo1ENoPujAvbNoPJBK21a2oKoF/JGOpvDglu0VebF5yobsoJyFLor25mINHZlxHylXblrqHOuffnUiU91xUSw1gbTHkbtyOsTKsLGVLKw+X2jk0M8bGwrntRODX2cfYB5AJ8mQaEVEmEwEZD1sCFMVG2gQHzDmgiIVBSBPtqCOjg5K4JvO0BpT9HTnxudGzYRNvIi+Dln94MShP6x3g3gP83NCpANQ7L+7XkvT3Q5cifZcX37D4vYCyYpERPJc9hO5WlbsUd7DJEAvVwemi7azuvAfJEQ34mjOBf2+72xE/EYKxZv85GUpwC79oVObY0jBPF+WHG94syh70ZYIw=";
translation.detectedLocale = "";

function showTranslationDialog() {
  if(!translation.launchDialog)
    loadScript("/static/84561821/plugin/translation/dialog.js");
  else
    translation.launchDialog();
  return false; 
}&lt;/script&gt;&lt;/div&gt;&lt;/div&gt;&lt;/body&gt;&lt;/html&gt;

And the response header looks like

Response headers: {'X-Frame-Options': 'sameorigin', 'X-Instance-Identity': 'MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAyIYGgQSshNjxYz1dxA4h4OQtyFz00oXjDDjMSeJmR0o9Qrr9CkDYnrjuher6aMj/ls8qI2um+CHk9zVwUeSTzHhBIg29V+l7Hu4k9RF18ZY2omMDgonvuH9sqBpKAu4/S1U+RXQuQIKQk/66+UhhXPL3EYqYiNPuvRHXfhqIjXqH8Ts58q1ueuJ06b63RcnAx1z3XEq/pBMImz1HaXFhqS//FVhnx6Rl+AC7pXksR+vchyk8M9oHixtHk4lqaJxCgdAjydojVagPwEeh98TfBcmhjdLQhdLNaTe0SB7agNgiN0rgwzC9CCbQYlFMcYZ2UrcsPL5XsFRs8sqiMlPpswIDAQAB', 'X-Content-Type-Options': 'nosniff', 'X-Jenkins-CLI-Port': '41603', 'X-Jenkins-CLI2-Port': '41603', 'X-Jenkins-Session': '84561821', 'X-Hudson-CLI-Port': '41603', 'Cache-Control': 'no-cache,no-store,must-revalidate', 'Allow': 'POST', 'X-Hudson': '1.395', 'Server': 'Jetty(winstone-2.8)', 'X-Jenkins': '1.612', 'Set-Cookie': 'JSESSIONID.fa5428c3=158cuy2kt13l64ci0bpcstd9b;Path=/;HttpOnly', 'X-Hudson-Theme': 'default', 'Content-Type': 'text/html;charset=UTF-8', 'Expires': 'Thu, 01 Jan 1970 00:00:00 GMT', 'X-SSH-Endpoint': '10.80.250.149:48964'}

Exception during execution: SystemExit: 1 in <script> at line number 113

Question

Is there any prerequisite for this kind of setup? Or Am I missing anything from Jenkins configuration?

It will be very helpful if somebody can point out to any direction. Till now I am unable to find any proper documentation for this combination (Jenkins+XLR) though both the tools support each other by default.

Note: There is one XL Release plug-in for Jenkins which helps to create a new release through a build job. But my requirement is quite reverse where a task from XLR will trigger Jenkins build job.