* finish task #1967.

module/mail/lang/en.php

@@ -42,3 +42,4 @@ $lang->mail->content        = 'If you can see this, the email notification featu
 $lang->mail->successSended  = 'Successfully sended!';
 $lang->mail->sendmailTips   = 'Tips: system will not send mail to current user.';
 $lang->mail->needConfigure  = "I can not find the configuration, please configure it first.";
+$lang->mail->nofsocket      = 'The fsocket correlation function is disabled, not letter!';

module/mail/lang/zh-cn.php

@@ -42,3 +42,4 @@ $lang->mail->content        = '邮箱设置成功';
 $lang->mail->successSended  = '成功发送！';
 $lang->mail->sendmailTips   = '提示：系统不会为当前操作者发信。';
 $lang->mail->needConfigure  = '无法找到邮件配置信息，请先配置邮件发送参数。';
+$lang->mail->nofsocket      = 'fsocket相关函数被禁用，不能发信！';

module/mail/model.php

@@ -243,6 +243,9 @@ class mailModel extends model
     {
         if(!$this->config->mail->turnon) return;
 
+        /* Task #1967. check the function of fsocket. */
+        if(function_exists('fsockopen')) die(js::alert($this->lang->mail->nofsocket));
+
         ob_start();
         $toList  = $toList ? explode(',', str_replace(' ', '', $toList)) : array();
         $ccList  = $ccList ? explode(',', str_replace(' ', '', $ccList)) : array();