1. Go to ClearPass Guest

2. Go to Configuration


3. Go to Guest Self registration

4. Choose and press Edit the current profile u would like to edit (GSG-GUEST)

5. Go to the from under Register Page 

6. choose the sponsor-email > press edit

7.  there u will find the validator argument u should edit and fit ur needs


example configuration:

array (

  'allow' => 

  array (

    0 => 'gunungsewu.com',

    1 => 'farpoint.co.id',

    2 => 'sreeyasewu.com',

    3 => 'sequislife.com',

    4 => 'sequisfinancial.com',

    5 => 'sequisam.co.id',

    6 => 'rejuve.co.id',

    7 => 'ggpc.co.id',

    8 => 'gg-foods.com',

    9 => 'baramutiaraprima.com',

    10 => 'add_new_domain_here',

  ),

  'deny' => 

  array (

  ),

)

7. save changes