Pass login from a another website

Pass login from a another website

I am Using forms to pass login info from our website to service desk
 
but i am having a problems with the login
 
this is my code i am using
 
    <form action=" https://myserver.com/HomePage.do" method="post">
            <p>
              Usernane:
              <input type=text name="username" >
              Password:
              <input type=password name="password" >
              <input type=hidden value="mydomain"  name="DOMAIN_NAME" >
            <p align="right">
              <input type=submit value="Login" >
            </p>
    </form>









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