Windows Authentication with jCIFS

Question

Hello,
I am new to jCIFS and willing to know as to how I can use windows authentication using jCIFS or any other tool/framework.
I ran through the link - [http://jcifs.samba.org/src/docs/ntlmhttpauth.html] and developed a small web application (deployed on tomcat 5.x) which would fetch user details for me from my organization's active directory. It works fine on my machine; however when I try running the application from any other machine, it prompts me for the credentials. I want this application to authenticate the user (without user having to key in the credentials) that is logged on to the machine and fetch his/her user details. Can anyone please advise?
Thanking you in anticipation.
Here's my web.xml
<!--l version="1.0" encoding="UTF-8-->
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>AD Authentication</display-name>
<filter>
  <filter-name>NtlmHttpFilter</filter-name>
  <filter-class>jcifs.http.NtlmHttpFilter</filter-class>
  <init-param>
   <param-name>jcifs.http.domainController</param-name>
   <param-value>xx.xx.xx.xx</param-value>
   </init-param>
  <init-param>
   <param-name>jcifs.smb.client.domain</param-name>
   <param-value>MYDOMAIN</param-value>
  </init-param>
</filter>
<filter-mapping>
  <filter-name>NtlmHttpFilter</filter-name>
  <url-pattern>/*</url-pattern>
</filter-mapping>
<welcome-file-list>
  <welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
{code}

Answer 1

Here's a useful link - [http://roneiv.wordpress.com/2007/12/11/hello-world/]. This worked for me.
Can any one let me know as to how can I retrieve user's e-mail (associated with his account) once he's authenticated? For example, if user xyz has logged in to domain mydomain then I need to fetch [[email protected]|mailto:[email protected]]
Thanks!