diff --git a/framework/ActiveSync/lib/Horde/ActiveSync/Request/Settings.php b/framework/ActiveSync/lib/Horde/ActiveSync/Request/Settings.php
index d7477b4757e..a4003942fd7 100644
--- a/framework/ActiveSync/lib/Horde/ActiveSync/Request/Settings.php
+++ b/framework/ActiveSync/lib/Horde/ActiveSync/Request/Settings.php
@@ -72,6 +72,7 @@ class Horde_ActiveSync_Request_Settings extends Horde_ActiveSync_Request_Base
 
     const STATUS_SUCCESS                    = 1;
     const STATUS_ERROR                      = 2;
+    const STATUS_UNAVAILABLE                = 4;
 
     const OOF_STATE_ENABLED                 = 1;
     const OOF_STATE_DISABLED                = 0;
@@ -253,7 +254,7 @@ protected function _handle()
             $this->_encoder->startTag(self::SETTINGS_OOF);
             $this->_encoder->startTag(self::SETTINGS_STATUS);
             if (!isset($result['set']['oof'])) {
-                $this->_encoder->content(0);
+                $this->_encoder->content(self::OOF_STATE_DISABLED);
             } else {
                 $this->_encoder->content($result['set']['oof']);
             }
@@ -303,46 +304,49 @@ protected function _handle()
         if (isset($request['get']['oof'])) {
             $this->_encoder->startTag(self::SETTINGS_OOF);
             $this->_encoder->startTag(self::SETTINGS_STATUS);
-            $this->_encoder->content(1);
+            $this->_encoder->content($result['get']['oof']['status']);
             $this->_encoder->endTag(); // end self::SETTINGS_STATUS
 
-            $this->_encoder->startTag(self::SETTINGS_GET);
-            $this->_encoder->startTag(self::SETTINGS_OOFSTATE);
-            $this->_encoder->content($result['get']['oof']['oofstate']);
-            $this->_encoder->endTag(); // end self::SETTINGS_OOFSTATE
-            // This we maybe need later on (OOFSTATE=2). It shows that OOF
-            // Messages could be send depending on Time being set in here.
-            // Unfortunately cannot proof it working on my device.
-            if ($result['get']['oof']['oofstate'] == 2) {
-                $this->_encoder->startTag(self::SETTINGS_STARTTIME);
-                $this->_encoder->content(gmdate('Y-m-d\TH:i:s.000', $result['get']['oof']['starttime']));
-                $this->_encoder->endTag(); // end self::SETTINGS_STARTTIME
-                $this->_encoder->startTag(self::SETTINGS_ENDTIME);
-                $this->_encoder->content(gmdate('Y-m-d\TH:i:s.000', $result['get']['oof']['endtime']));
-                $this->_encoder->endTag(); // end self::SETTINGS_ENDTIME
-            }
-            foreach($result['get']['oof']['oofmsgs'] as $oofentry) {
-                $this->_encoder->startTag(self::SETTINGS_OOFMESSAGE);
-                $this->_encoder->startTag($oofentry['appliesto'],false,true);
-                $this->_encoder->startTag(self::SETTINGS_ENABLED);
-                $this->_encoder->content($oofentry['enabled']);
-                $this->_encoder->endTag(); // end self::SETTINGS_ENABLED
-                $this->_encoder->startTag(self::SETTINGS_REPLYMESSAGE);
-                $this->_encoder->content($oofentry['replymessage']);
-                $this->_encoder->endTag(); // end self::SETTINGS_REPLYMESSAGE
-                $this->_encoder->startTag(self::SETTINGS_BODYTYPE);
-                switch (strtolower($oofentry['bodytype'])) {
-                case 'text':
-                    $this->_encoder->content('Text');
-                    break;
-                case 'HTML':
-                    $this->_encoder->content('HTML');
+            if ($result['get']['oof']['status'] == self::STATUS_SUCCESS) {
+                $this->_encoder->startTag(self::SETTINGS_GET);
+                $this->_encoder->startTag(self::SETTINGS_OOFSTATE);
+                $this->_encoder->content($result['get']['oof']['oofstate']);
+                $this->_encoder->endTag(); // end self::SETTINGS_OOFSTATE
+                // This we maybe need later on (OOFSTATE=2). It shows that OOF
+                // Messages could be send depending on Time being set in here.
+                // Unfortunately cannot proof it working on my device.
+                if ($result['get']['oof']['oofstate'] == 2) {
+                    $this->_encoder->startTag(self::SETTINGS_STARTTIME);
+                    $this->_encoder->content(gmdate('Y-m-d\TH:i:s.000', $result['get']['oof']['starttime']));
+                    $this->_encoder->endTag(); // end self::SETTINGS_STARTTIME
+                    $this->_encoder->startTag(self::SETTINGS_ENDTIME);
+                    $this->_encoder->content(gmdate('Y-m-d\TH:i:s.000', $result['get']['oof']['endtime']));
+                    $this->_encoder->endTag(); // end self::SETTINGS_ENDTIME
+                }
+                foreach($result['get']['oof']['oofmsgs'] as $oofentry) {
+                    $this->_encoder->startTag(self::SETTINGS_OOFMESSAGE);
+                    $this->_encoder->startTag($oofentry['appliesto'],false,true);
+                    $this->_encoder->startTag(self::SETTINGS_ENABLED);
+                    $this->_encoder->content($oofentry['enabled']);
+                    $this->_encoder->endTag(); // end self::SETTINGS_ENABLED
+                    $this->_encoder->startTag(self::SETTINGS_REPLYMESSAGE);
+                    $this->_encoder->content($oofentry['replymessage']);
+                    $this->_encoder->endTag(); // end self::SETTINGS_REPLYMESSAGE
+                    $this->_encoder->startTag(self::SETTINGS_BODYTYPE);
+                    switch (strtolower($oofentry['bodytype'])) {
+                    case 'text':
+                        $this->_encoder->content('Text');
+                        break;
+                    case 'HTML':
+                        $this->_encoder->content('HTML');
+                    }
+                    $this->_encoder->endTag(); // end self::SETTINGS_BODYTYPE
+                    $this->_encoder->endTag(); // end self::SETTINGS_OOFMESSAGE
                 }
-                $this->_encoder->endTag(); // end self::SETTINGS_BODYTYPE
-                $this->_encoder->endTag(); // end self::SETTINGS_OOFMESSAGE
+                $this->_encoder->endTag(); // end self::SETTINGS_GET
+                $this->_encoder->endTag(); // end self::SETTINGS_OOF
             }
-            $this->_encoder->endTag(); // end self::SETTINGS_GET
-            $this->_encoder->endTag(); // end self::SETTINGS_OOF
+
         }
 
         $this->_encoder->endTag(); // end self::SETTINGS_SETTINGS
diff --git a/framework/ActiveSync/package.xml b/framework/ActiveSync/package.xml
index f29f200b543..0c7cf552d49 100644
--- a/framework/ActiveSync/package.xml
+++ b/framework/ActiveSync/package.xml
@@ -21,6 +21,7 @@
  </stability>
  <license uri="http://www.horde.org/licenses/gpl">GPL-2.0</license>
  <notes>
+* [mjr] Return proper status codes when OOF is unavailable (Bug #12757).
 * [mjr] Fix fatal crash when conflict is detected (Thomas Jarosch &lt;thomas.jarosch@intra2net.com&gt;, Bug #12755)
  </notes>
  <contents>
@@ -1763,6 +1764,7 @@
    <date>2013-10-07</date>
    <license uri="http://www.horde.org/licenses/gpl">GPL-2.0</license>
    <notes>
+* [mjr] Return proper status codes when OOF is unavailable (Bug #12757).
 * [mjr] Fix fatal crash when conflict is detected (Thomas Jarosch &lt;thomas.jarosch@intra2net.com&gt;, Bug #12755)
    </notes>
   </release>
diff --git a/framework/Core/lib/Horde/Core/ActiveSync/Connector.php b/framework/Core/lib/Horde/Core/ActiveSync/Connector.php
index 5be2df75d95..dbaf6d62730 100644
--- a/framework/Core/lib/Horde/Core/ActiveSync/Connector.php
+++ b/framework/Core/lib/Horde/Core/ActiveSync/Connector.php
@@ -647,20 +647,30 @@ public function horde_hasInterface($api)
     /**
      * Return the currently set vacation message details.
      *
-     * @return array  The vacation rule properties.
+     * @return array|boolean  The vacation rule properties or false if
+     *                        interface unavailable.
      */
     public function filters_getVacation()
     {
-        return $this->_registry->filter->getVacation();
+        if ($this->horde_hasInterface('filter')) {
+            return $this->_registry->filter->getVacation();
+        } else {
+            return false;
+        }
     }
 
     /**
      * Set vacation message properties.
      *
      * @param array $setting  The vacation details.
+     *
+     * @throws Horde_Exception
      */
     public function filters_setVacation(array $setting)
     {
+        if (!$this->horde_hasInterface('filter')) {
+            throw new Horde_Exception('Filter interface unavailable.');
+        }
         if ($setting['oofstate'] == Horde_ActiveSync_Request_Settings::OOF_STATE_ENABLED) {
             // Only support a single message, the APPLIESTOINTERNAL message.
             foreach ($setting['oofmsgs'] as $msg) {
diff --git a/framework/Core/lib/Horde/Core/ActiveSync/Driver.php b/framework/Core/lib/Horde/Core/ActiveSync/Driver.php
index 793a351404f..727580e24e1 100644
--- a/framework/Core/lib/Horde/Core/ActiveSync/Driver.php
+++ b/framework/Core/lib/Horde/Core/ActiveSync/Driver.php
@@ -1807,7 +1807,9 @@ public function getSettings(array $settings, $device)
         foreach ($settings as $key => $setting) {
             switch ($key) {
             case 'oof':
-                $vacation = $this->_connector->filters_getVacation();
+                if (!$vacation = $this->_connector->filters_getVacation()) {
+                    return array('oof' => array('status' => Horde_ActiveSync_Request_Settings::STATUS_UNAVAILABLE));
+                }
                 $res['oof'] = array(
                     'status' => Horde_ActiveSync_Request_Settings::STATUS_SUCCESS,
                     'oofstate' => ($vacation['disabled']
diff --git a/framework/Core/package.xml b/framework/Core/package.xml
index 8e8fcff620b..6b3d95e8fb3 100644
--- a/framework/Core/package.xml
+++ b/framework/Core/package.xml
@@ -39,6 +39,7 @@
  </stability>
  <license uri="http://www.horde.org/licenses/lgpl21">LGPL-2.1</license>
  <notes>
+* [mjr] Do not assume that the filter API is available (Bug #12757).
 * [mms] Add ability to load javascript via a HordeCore AJAX response (Request #10971).
 * [mms] Add ability to expire CSS cache based on file modification time.
 * [mms] Allow disabling VFS via the configuration interface.
@@ -1216,7 +1217,7 @@
    <package>
     <name>Horde_ActiveSync</name>
     <channel>pear.horde.org</channel>
-    <min>2.8.0</min>
+    <min>2.8.4</min>
     <max>3.0.0alpha1</max>
     <exclude>3.0.0alpha1</exclude>
    </package>
@@ -3178,6 +3179,7 @@
    <date>2013-10-08</date>
    <license uri="http://www.horde.org/licenses/lgpl21">LGPL-2.1</license>
    <notes>
+* [mjr] Do not assume that the filter API is available (Bug #12757).
 * [mms] Add ability to load javascript via a HordeCore AJAX response (Request #10971).
 * [mms] Add ability to expire CSS cache based on file modification time.
 * [mms] Allow disabling VFS via the configuration interface.