diff --git a/adm/sms_admin/config_update.php b/adm/sms_admin/config_update.php
index 04f4818d5..ec18b2ec8 100644
--- a/adm/sms_admin/config_update.php
+++ b/adm/sms_admin/config_update.php
@@ -8,16 +8,15 @@ check_demo();
 
 $g5['title'] = "SMS 기본설정";
 
+// 회신번호 체크
+if(!check_vaild_callback($cf_phone))
+    alert('회신번호가 올바르지 않습니다.');
+
 $userinfo = get_icode_userinfo($cf_icode_id, $cf_icode_pw);
 
 if ($userinfo['code'] == '202')
     alert('아이코드 아이디와 패스워드가 맞지 않습니다.');
 
-if ($cf_member == '1')
-    $cf_member = 1;
-else
-    $cf_member = 0;
-
 $res = sql_fetch("select * from ".$g5['sms5_config_table']." limit 1");
 
 if (!$res)
diff --git a/adm/sms_admin/sms_write.php b/adm/sms_admin/sms_write.php
index b63d3dd71..1016f1d5e 100644
--- a/adm/sms_admin/sms_write.php
+++ b/adm/sms_admin/sms_write.php
@@ -114,7 +114,7 @@ if ($config['cf_sms_use'] == 'icode') { // 아이코드 사용
 
         <div id="write_reply">
             <label for="wr_reply">회신<strong class="sound_only"> 필수</strong></label>
-            <input type="text" name="wr_reply" value="<?php echo $sms5['cf_phone']?>" id="wr_reply" required class="frm_input required" size="17" maxlength="20">
+            <input type="text" name="wr_reply" value="<?php echo $sms5['cf_phone']?>" id="wr_reply" required class="frm_input required" size="17" maxlength="20" readonly="readonly">
         </div>
 
         <div id="write_recv" class="write_inner">
diff --git a/adm/sms_admin/sms_write_send.php b/adm/sms_admin/sms_write_send.php
index f256c3e41..333b58c7c 100644
--- a/adm/sms_admin/sms_write_send.php
+++ b/adm/sms_admin/sms_write_send.php
@@ -12,6 +12,9 @@ $wr_message = clean_xss_tags(trim($wr_message));
 if (!$wr_reply)
     win_close_alert('회신 번호를 숫자, - 로 입력해주세요.');
 
+if(!check_vaild_callback($wr_reply))
+    win_close_alert('회신 번호를 올바르게 입력해 주십시오.');
+
 if (!$wr_message)
     win_close_alert('메세지를 입력해주세요.');
 
@@ -42,6 +45,9 @@ while ($row = array_shift($send_list))
                 while ($row = sql_fetch_array($qry))
                 {
                     $row['bk_hp'] = get_hp($row['bk_hp'], 0);
+
+                    if(!$row['bk_hp']) continue;
+
                     if ($wr_overlap && array_overlap($hps, $row['bk_hp'])) {
                         $overlap++;
                         array_push( $duplicate_data['hp'], $row['bk_hp'] );
@@ -63,6 +69,8 @@ while ($row = array_shift($send_list))
                     $hp = get_hp($row['mb_hp'], 0);
                     $mb_id = $row['mb_id'];
 
+                    if(!$hp) continue;
+
                     if ($wr_overlap && array_overlap($hps, $hp)) {
                         $overlap++;
                         array_push( $duplicate_data['hp'], $row['bk_hp'] );
@@ -84,6 +92,8 @@ while ($row = array_shift($send_list))
                 $hp = get_hp($item[$i][1], 0);
                 $name = $item[$i][0];
 
+                if(!$hp) continue;
+
                 if ($wr_overlap && array_overlap($hps, $hp)) {
                     $overlap++;
                     array_push( $duplicate_data['hp'], $row['bk_hp'] );
@@ -99,6 +109,8 @@ while ($row = array_shift($send_list))
                 $row = sql_fetch("select * from {$g5['sms5_book_table']} where bk_no='$item[$i]'");
                 $row['bk_hp'] = get_hp($row['bk_hp'], 0);
 
+                if(!$row['bk_hp']) continue;
+
                 if ($wr_overlap && array_overlap($hps, $row['bk_hp'])) {
                     $overlap++;
                     array_push( $duplicate_data['hp'], $row['bk_hp'] );
diff --git a/lib/common.lib.php b/lib/common.lib.php
index 1a1220ff5..86d9e31fa 100644
--- a/lib/common.lib.php
+++ b/lib/common.lib.php
@@ -3151,4 +3151,29 @@ function get_skin_url($dir, $skin)
 
     return str_replace(G5_PATH, G5_URL, $skin_path);
 }
+
+// 발신번호 유효성 체크
+function check_vaild_callback($callback){
+   $_callback = preg_replace('/[^0-9]/','', $callback);
+
+   /**
+   * 1588 로시작하면 총8자리인데 7자리라 차단
+   * 02 로시작하면 총9자리 또는 10자리인데 11자리라차단
+   * 1366은 그자체가 원번호이기에 다른게 붙으면 차단
+   * 030으로 시작하면 총10자리 또는 11자리인데 9자리라차단
+   */
+
+   if( substr($_callback,0,4) == '1588') if( strlen($_callback) != 8) return false;
+   if( substr($_callback,0,2) == '02')   if( strlen($_callback) != 9  && strlen($_callback) != 10 ) return false;
+   if( substr($_callback,0,3) == '030')  if( strlen($_callback) != 10 && strlen($_callback) != 11 ) return false;
+
+   if( !preg_match("/^(02|0[3-6]\d|01(0|1|3|5|6|7|8|9)|070|080|007)\-?\d{3,4}\-?\d{4,5}$/",$_callback) &&
+       !preg_match("/^(15|16|18)\d{2}\-?\d{4,5}$/",$_callback) ){
+             return false;
+   } else if( preg_match("/^(02|0[3-6]\d|01(0|1|3|5|6|7|8|9)|070|080)\-?0{3,4}\-?\d{4}$/",$_callback )) {
+             return false;
+   } else {
+             return true;
+   }
+}
 ?>
\ No newline at end of file
diff --git a/plugin/sms5/sms5.lib.php b/plugin/sms5/sms5.lib.php
index 8979454dc..175c74f36 100644
--- a/plugin/sms5/sms5.lib.php
+++ b/plugin/sms5/sms5.lib.php
@@ -7,19 +7,6 @@ if (!defined('_GNUBOARD_')) exit;
 **
 *************************************************************************/
 
-// 스킨디렉토리를 SELECT 형식으로 얻음
-function get_sms5_skin_select($skin_gubun, $id, $name, $selected='', $event='')
-{
-    $skins = get_skin_dir($skin_gubun, G5_SMS5_PATH);
-    $str = "<select id=\"$id\" name=\"$name\" $event>\n";
-    for ($i=0; $i<count($skins); $i++) {
-        if ($i == 0) $str .= "<option value=\"\">선택</option>";
-        $str .= option_selected($skins[$i], $selected);
-    }
-    $str .= "</select>";
-    return $str;
-}
-
 // 한페이지에 보여줄 행, 현재페이지, 총페이지수, URL
 function sms5_sub_paging($write_pages, $cur_page, $total_page, $url, $add="", $starget="")
 {