From beae9e335f1d5c33dc74f1b9994aef810969e5b6 Mon Sep 17 00:00:00 2001
From: alec <alec@208e9e7b-5314-0410-a742-e7e81cd9613c>
Date: Tue, 27 Apr 2010 13:01:12 +0000
Subject: - add DNS checking code for Windows & PHP<5.3.0

git-svn-id: https://svn.roundcube.net/trunk@3569 208e9e7b-5314-0410-a742-e7e81cd9613c
---
 roundcubemail/program/include/main.inc | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

(limited to 'roundcubemail/program/include')

diff --git a/roundcubemail/program/include/main.inc b/roundcubemail/program/include/main.inc
index 535fde18b..004212ff8 100644
--- a/roundcubemail/program/include/main.inc
+++ b/roundcubemail/program/include/main.inc
@@ -1588,8 +1588,15 @@ function check_email($email, $dns_check=true)
     if (!$dns_check || !rcmail::get_instance()->config->get('email_dns_check'))
       return true;
 
-    if (strtoupper(substr(PHP_OS, 0, 3)) == 'WIN' && version_compare(PHP_VERSION, '5.3.0', '<'))
-      return true;
+    if (strtoupper(substr(PHP_OS, 0, 3)) == 'WIN' && version_compare(PHP_VERSION, '5.3.0', '<')) {
+      $lookup = array();
+      @exec("nslookup -type=MX " . escapeshellarg($domain_part) . " 2>&1", $lookup);
+      foreach ($lookup as $line) {
+        if (strpos($line, 'MX preference'))
+          return true;
+      }
+      return false;
+    }
 
     // find MX record(s)
     if (getmxrr($domain_part, $mx_records))
-- 
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