diff --git a/src/Valitron/Validator.php b/src/Valitron/Validator.php
index f085bb5..4eae399 100644
--- a/src/Valitron/Validator.php
+++ b/src/Valitron/Validator.php
@@ -511,6 +511,9 @@ class Validator
     {
         if ($this->validateEmail($field, $value)) {
             $domain = ltrim(stristr($value, '@'), '@') . '.';
+            if (function_exists('idn_to_ascii') && defined('INTL_IDNA_VARIANT_UTS46')) {
+                $domain = idn_to_ascii($domain, 0, INTL_IDNA_VARIANT_UTS46);
+            }
             return checkdnsrr($domain, 'ANY');
         }