diff --git a/mailcow/src/mailcow-dockerized/data/web/inc/lib/vendor/robthree/twofactorauth/lib/Providers/Time/NTPTimeProvider.php b/mailcow/src/mailcow-dockerized/data/web/inc/lib/vendor/robthree/twofactorauth/lib/Providers/Time/NTPTimeProvider.php
new file mode 100644
index 0000000..d69a3a6
--- /dev/null
+++ b/mailcow/src/mailcow-dockerized/data/web/inc/lib/vendor/robthree/twofactorauth/lib/Providers/Time/NTPTimeProvider.php
@@ -0,0 +1,54 @@
+<?php
+
+namespace RobThree\Auth\Providers\Time;
+
+/**
+ * Takes the time from any NTP server
+ */
+class NTPTimeProvider implements ITimeProvider
+{
+    public $host;
+    public $port;
+    public $timeout;
+
+    function __construct($host = 'time.google.com', $port = 123, $timeout = 1)
+    {
+        $this->host = $host;
+
+        if (!is_int($port) || $port <= 0 || $port > 65535)
+            throw new \TimeException('Port must be 0 < port < 65535');
+        $this->port = $port;
+
+        if (!is_int($timeout) || $timeout < 0)
+            throw new \TimeException('Timeout must be >= 0');
+        $this->timeout = $timeout;
+    }
+
+    public function getTime() {
+        try {
+            /* Create a socket and connect to NTP server */
+            $sock = socket_create(AF_INET, SOCK_DGRAM, SOL_UDP);
+            socket_set_option($sock, SOL_SOCKET, SO_RCVTIMEO, ['sec' => $this->timeout, 'usec' => 0]);
+            socket_connect($sock, $this->host, $this->port);
+
+            /* Send request */
+            $msg = "\010" . str_repeat("\0", 47);
+            socket_send($sock, $msg, strlen($msg), 0);
+
+            /* Receive response and close socket */
+            if (socket_recv($sock, $recv, 48, MSG_WAITALL) === false)
+                throw new \Exception(socket_strerror(socket_last_error($sock)));
+            socket_close($sock);
+
+            /* Interpret response */
+            $data = unpack('N12', $recv);
+            $timestamp = sprintf('%u', $data[9]);
+
+            /* NTP is number of seconds since 0000 UT on 1 January 1900 Unix time is seconds since 0000 UT on 1 January 1970 */
+            return $timestamp - 2208988800;
+        }
+        catch (Exception $ex) {
+            throw new \TimeException(sprintf('Unable to retrieve time from %s (%s)', $this->host, $ex->getMessage()));
+        }
+    }
+}