After email form submitting how do i redirect to node page

You would have to do that in a hook_form_alter.

http://drupal.org/node/651106

More info, add this to a module and then clear cache:

function mymodule_form_alter(&$form, &$form_state, $form_id) {
  if ($form_id == 'forward_form') {
     $form['#submit'][] = 'my_submit_handler';
  }
}

function my_submit_handler(&$form, &$form_state) {
  $form_state['redirect'] = $_GET['path'];
}

Where did it redirect to? Was the submit handler even reached? You may have to put watchdog calls into the submit handler to see what's in the $_GET variable and $form_state variable. You need to do a little debugging.

watchdog('my_module', '

'.print_r($form_state,1).'

');

Then go look at the Drupal log messages.