diff --git a/d_setting/set.php b/d_setting/set.php
index 7627c9db..2405cdb0 100644
--- a/d_setting/set.php
+++ b/d_setting/set.php
@@ -6,6 +6,6 @@ sammo
 localhost
 25
 test
-lemein
+letmein
 @localhost
  */
diff --git a/f_func/class._String.php b/f_func/class._String.php
index be0865eb..207f32f0 100644
--- a/f_func/class._String.php
+++ b/f_func/class._String.php
@@ -154,7 +154,7 @@ class _String {
         return $str;
     }
 
-    function Fill($str, $maxsize, $ch) {
+    static function Fill($str, $maxsize, $ch) {
         $size = strlen($str);
 
         $count = ($maxsize - $size) / 2;
@@ -169,7 +169,7 @@ class _String {
         return $string;
     }
 
-    function Fill2($str, $maxsize, $ch='0') {
+    static function Fill2($str, $maxsize, $ch='0') {
         $size = strlen($str);
 
         $count = ($maxsize - $size);
diff --git a/f_func/class._Validation.php b/f_func/class._Validation.php
index 6e919202..0d7bd6bb 100644
--- a/f_func/class._Validation.php
+++ b/f_func/class._Validation.php
@@ -1,6 +1,6 @@
 <?php
 require_once(ROOT.W.F_FUNC.W.'class._String.php');
-
+require_once(ROOT.W.E_LIB.W.'util.php');
 class _Validation {
     public static function CheckID($id) {
         $len = strlen($id);
@@ -103,6 +103,9 @@ class _Validation {
     }
 
     public static function CheckEmail($email) {
+        if(util::ends_with($email, '@localhost')){
+            return 0;
+        }
         if(!preg_match("/^[_\.0-9a-zA-Z-]+@([0-9a-zA-Z][0-9a-zA-Z-]+\.)+[a-zA-Z]{2,6}$/i", $email)) {
             return 1;
         } else {