Can block certain domains from registering, such as ten-minute-mail services. Two example domains provided in configuration.

app/Http/Controllers/Auth/AuthController.php

@@ -14,6 +14,7 @@ use Session;
 use Twig;
 use Validator;
 use Log;
+use Config;
 
 /**
  * Class AuthController
@@ -160,9 +161,20 @@ class AuthController extends Controller
         }
         // @codeCoverageIgnoreEnd
 
+
         $data             = $request->all();
         $data['password'] = bcrypt($data['password']);
 
+        // is user email domain blocked?
+        $parts = explode('@', $data['email']);
+        if (isset($parts[1]) && in_array($parts[1], Config::get('mail.blocked_domains'))) {
+
+            $validator->getMessageBag()->add('email', trans('validation.invalid_domain'));
+            $this->throwValidationException(
+                $request, $validator
+            );
+        }
+
         Auth::login($this->create($data));
 
         // get the email address

config/mail.php

@@ -15,6 +15,7 @@ return [
     |
     */
 
+    'blocked_domains' => ['trbvm.com', 'example.com'],
     'driver'          => env('EMAIL_DRIVER', 'smtp'),
 
     /*

resources/lang/en/validation.php

@@ -13,6 +13,7 @@ return [
     |
     */
 
+    'invalid_domain'          => 'Cannot register from this domain.',
     'file_already_attached'   => 'Uploaded file ":name" is already attached to this object.',
     'file_attached'           => 'Succesfully uploaded file ":name".',
     'file_invalid_mime'       => 'File ":name" is of type ":mime" which is not accepted as a new upload.',

resources/lang/nl/validation.php

@@ -13,6 +13,7 @@ return [
     |
     */
 
+    'invalid_domain'          => 'Kan niet registereren vanaf dit domein.',
     'file_already_attached'   => 'Het geuploade bestand ":name" is al gelinkt aan deze transactie.',
     'file_attached'           => 'Bestand met naam ":name" is met succes geuploaded.',
     'file_invalid_mime'       => 'Bestand ":name" is van het type ":mime", en die kan je niet uploaden.',