diff --git a/data/Dockerfiles/dovecot/imapsync_cron.pl b/data/Dockerfiles/dovecot/imapsync_cron.pl
index 132e536e..ddd4746a 100755
--- a/data/Dockerfiles/dovecot/imapsync_cron.pl
+++ b/data/Dockerfiles/dovecot/imapsync_cron.pl
@@ -54,6 +54,10 @@ while ($row = $sth->fetchrow_arrayref()) {
   $delete1            = @$row[12];
   $delete2            = @$row[13];
 
+  $is_running = $dbh->prepare("UPDATE imapsync SET is_running = 1 WHERE id = ?");
+  $is_running->bind_param( 1, ${id} );
+  $is_running->execute();
+
   if ($enc1 eq "TLS") { $enc1 = "--tls1"; } elsif ($enc1 eq "SSL") { $enc1 = "--ssl1"; } else { undef $enc1; }
 
   my $template = $run_dir . '/imapsync.XXXXXXX';
@@ -83,7 +87,7 @@ while ($row = $sth->fetchrow_arrayref()) {
 	"--passfile2", $passfile2->filename,
 	'--no-modulesversion'], ">", \my $stdout;
 
-  $update = $dbh->prepare("UPDATE imapsync SET returned_text = ?, last_run = NOW() WHERE id = ?");
+  $update = $dbh->prepare("UPDATE imapsync SET returned_text = ?, last_run = NOW(), is_running = 0 WHERE id = ?");
   $update->bind_param( 1, ${stdout} );
   $update->bind_param( 2, ${id} );
   $update->execute();
diff --git a/data/web/inc/init_db.inc.php b/data/web/inc/init_db.inc.php
index 9b6a63c9..1bc02497 100644
--- a/data/web/inc/init_db.inc.php
+++ b/data/web/inc/init_db.inc.php
@@ -3,7 +3,7 @@ function init_db_schema() {
   try {
     global $pdo;
 
-    $db_version = "31102017_1049";
+    $db_version = "08112017_1049";
 
     $stmt = $pdo->query("SHOW TABLES LIKE 'versions'"); 
     $num_results = count($stmt->fetchAll(PDO::FETCH_ASSOC));
@@ -314,6 +314,7 @@ function init_db_schema() {
           "delete2duplicates" => "TINYINT(1) NOT NULL DEFAULT '1'",
           "delete1" => "TINYINT(1) NOT NULL DEFAULT '0'",
           "delete2" => "TINYINT(1) NOT NULL DEFAULT '0'",
+          "is_running" => "TINYINT(1) NOT NULL DEFAULT '0'",
           "returned_text" => "TEXT",
           "last_run" => "TIMESTAMP NULL DEFAULT NULL",
           "created" => "DATETIME(0) NOT NULL DEFAULT NOW(0)",
diff --git a/data/web/js/api.js b/data/web/js/api.js
index 23bf229e..824e2d64 100644
--- a/data/web/js/api.js
+++ b/data/web/js/api.js
@@ -79,6 +79,21 @@ $(document).ready(function() {
             $(this).removeClass('inputMissingAttr');
           }
         }
+        if ($(this).attr("max")) {
+          if ($(this).val() > $(this).attr("max")) {
+            invalid = true;
+            $(this).addClass('inputMissingAttr');
+          } else {
+            if ($(this).attr("min")) {
+              if ($(this).val() < $(this).attr("min")) {
+                invalid = true;
+                $(this).addClass('inputMissingAttr');
+              } else {
+                $(this).removeClass('inputMissingAttr');
+              }
+            }
+          }
+        }
       });
       if (!req_empty) {
         var attr_to_merge = $(this).closest("form").serializeObject();
@@ -129,18 +144,33 @@ $(document).ready(function() {
     // If clicked button is in a form with the same data-id as the button,
     // we merge all input fields by {"name":"value"} into api-attr
     if ($(this).closest("form").data('id') == id) {
-      var req_empty = false;
+      var invalid = false;
       $(this).closest("form").find('select, textarea, input').each(function() {
         if ($(this).prop('required')) {
           if (!$(this).val() && $(this).prop('disabled') === false) {
-            req_empty = true;
+            invalid = true;
             $(this).addClass('inputMissingAttr');
           } else {
             $(this).removeClass('inputMissingAttr');
           }
         }
+        if ($(this).attr("max")) {
+          if ($(this).val() > $(this).attr("max")) {
+            invalid = true;
+            $(this).addClass('inputMissingAttr');
+          } else {
+            if ($(this).attr("min")) {
+              if ($(this).val() < $(this).attr("min")) {
+                invalid = true;
+                $(this).addClass('inputMissingAttr');
+              } else {
+                $(this).removeClass('inputMissingAttr');
+              }
+            }
+          }
+        }
       });
-      if (!req_empty) {
+      if (!invalid) {
         var attr_to_merge = $(this).closest("form").serializeObject();
         var api_attr = $.extend(api_attr, attr_to_merge)
       } else {
diff --git a/data/web/js/mailbox.js b/data/web/js/mailbox.js
index d55b1913..9e2afa2c 100644
--- a/data/web/js/mailbox.js
+++ b/data/web/js/mailbox.js
@@ -421,7 +421,8 @@ jQuery(function($){
         {"name":"mins_interval","title":lang.mins_interval,"breakpoints":"all"},
         {"name":"last_run","title":lang.last_run,"breakpoints":"all"},
         {"name":"log","title":"Log"},
-        {"name":"active","filterable": false,"style":{"maxWidth":"50px","width":"70px"},"title":lang.active},
+        {"name":"active","filterable": false,"style":{"maxWidth":"70px","width":"70px"},"title":lang.active},
+        {"name":"is_running","filterable": false,"style":{"maxWidth":"120px","width":"100px"},"title":lang.status},
         {"name":"action","filterable": false,"sortable": false,"style":{"text-align":"right","maxWidth":"180px","width":"180px"},"type":"html","title":lang.action,"breakpoints":"xs sm"}
       ],
       "empty": lang.empty,
@@ -442,6 +443,14 @@ jQuery(function($){
               '<a href="#" id="delete_selected" data-id="single-syncjob" data-api-url="delete/syncjob" data-item="' + encodeURI(item.id) + '" class="btn btn-xs btn-danger"><span class="glyphicon glyphicon-trash"></span> ' + lang.remove + '</a>' +
               '</div>';
             item.chkbox = '<input type="checkbox" data-id="syncjob" name="multi_select" value="' + item.id + '" />';
+            if (item.is_running == 1) {
+              item.is_running = '<span id="active-script" class="label label-success">' + lang.running + '</span>';
+            } else {
+              item.is_running = '<span id="inactive-script" class="label label-warning">' + lang.waiting + '</span>';
+            }
+            if (!item.last_run > 0) {
+              item.last_run = lang.waiting;
+            }
           });
         }
       }),
diff --git a/data/web/js/user.js b/data/web/js/user.js
index 239507f4..900dced1 100644
--- a/data/web/js/user.js
+++ b/data/web/js/user.js
@@ -89,13 +89,14 @@ jQuery(function($){
         {"name":"chkbox","title":"","style":{"maxWidth":"40px","width":"40px","text-align":"center"},"filterable": false,"sortable": false,"type":"html"},
         {"sorted": true,"name":"id","title":"ID","style":{"maxWidth":"60px","width":"60px","text-align":"center"}},
         {"name":"server_w_port","title":"Server"},
-        {"name":"enc1","title":lang.encryption},
+        {"name":"enc1","title":lang.encryption,"breakpoints":"xs sm"},
         {"name":"user1","title":lang.username},
-        {"name":"exclude","title":lang.excludes},
+        {"name":"exclude","title":lang.excludes,"breakpoints":"xs sm"},
         {"name":"mins_interval","title":lang.interval + " (min)"},
-        {"name":"last_run","title":lang.last_run},
+        {"name":"last_run","title":lang.last_run,"breakpoints":"xs sm"},
         {"name":"log","title":"Log"},
-        {"name":"active","filterable": false,"style":{"maxWidth":"50px","width":"70px"},"title":lang.active},
+        {"name":"active","filterable": false,"style":{"maxWidth":"70px","width":"70px"},"title":lang.active},
+        {"name":"is_running","filterable": false,"style":{"maxWidth":"120px","width":"100px"},"title":lang.status},
         {"name":"action","filterable": false,"sortable": false,"style":{"text-align":"right","maxWidth":"180px","width":"180px"},"type":"html","title":lang.action,"breakpoints":"xs sm"}
       ],
       "empty": lang.empty,
@@ -109,7 +110,11 @@ jQuery(function($){
         success: function (data) {
           $.each(data, function (i, item) {
             item.log = '<a href="#syncjobLogModal" data-toggle="modal" data-syncjob-id="' + encodeURI(item.id) + '">Open logs</a>'
-            item.exclude = '<code>' + item.exclude + '</code>'
+            if (!item.exclude > 0) {
+              item.exclude = '-';
+            } else {
+              item.exclude  = '<code>' + item.exclude + '</code>';
+            }
             item.server_w_port = item.user1 + '@' + item.host1 + ':' + item.port1;
             if (acl_data.syncjobs === 1) {
               item.action = '<div class="btn-group">' +
@@ -122,6 +127,14 @@ jQuery(function($){
               item.action = '<span>-</span>';
               item.chkbox = '<input type="checkbox" disabled />';
             }
+            if (item.is_running == 1) {
+              item.is_running = '<span id="active-script" class="label label-success">' + lang.running + '</span>';
+            } else {
+              item.is_running = '<span id="inactive-script" class="label label-warning">' + lang.waiting + '</span>';
+            }
+            if (!item.last_run > 0) {
+              item.last_run = lang.waiting;
+            }
           });
         }
       }),
diff --git a/data/web/json_api.php b/data/web/json_api.php
index 0bc5e3a6..b622c312 100644
--- a/data/web/json_api.php
+++ b/data/web/json_api.php
@@ -13,7 +13,7 @@ delete/alias => POST data:
 
 */
 header('Content-Type: application/json');
-require_once 'inc/prerequisites.inc.php';
+require_once $_SERVER['DOCUMENT_ROOT'] . '/inc/prerequisites.inc.php';
 error_reporting(0);
 if (isset($_SESSION['mailcow_cc_role']) || isset($_SESSION['pending_mailcow_cc_username'])) {
   if (isset($_GET['query'])) {
@@ -489,6 +489,39 @@ if (isset($_SESSION['mailcow_cc_role']) || isset($_SESSION['pending_mailcow_cc_u
               ));
             }
           break;
+          case "syncjob":
+            if (isset($_POST['attr'])) {
+              $attr = (array)json_decode($_POST['attr'], true);
+              if (mailbox('add', 'syncjob', $attr) === false) {
+                if (isset($_SESSION['return'])) {
+                  echo json_encode($_SESSION['return']);
+                }
+                else {
+                  echo json_encode(array(
+                    'type' => 'error',
+                    'msg' => 'Cannot add item'
+                  ));
+                }
+              }
+              else {
+                if (isset($_SESSION['return'])) {
+                  echo json_encode($_SESSION['return']);
+                }
+                else {
+                  echo json_encode(array(
+                    'type' => 'success',
+                    'msg' => 'Task completed'
+                  ));
+                }
+              }
+            }
+            else {
+              echo json_encode(array(
+                'type' => 'error',
+                'msg' => 'Cannot find attributes in post data'
+              ));
+            }
+          break;
         }
       break;
       case "get":
diff --git a/data/web/lang/lang.de.php b/data/web/lang/lang.de.php
index 86c4505f..2dd5cd9e 100644
--- a/data/web/lang/lang.de.php
+++ b/data/web/lang/lang.de.php
@@ -158,6 +158,9 @@ $lang['user']['spamfilter_red'] = 'Rot: Die Nachricht ist eindeutig Spam und wir
 $lang['user']['spamfilter_default_score'] = 'Standardwert:';
 $lang['user']['spamfilter_hint'] = 'Der erste Wert beschreibt den "low spam score", der zweite Wert den "high spam score".';
 $lang['user']['spamfilter_table_domain_policy'] = "n.v. (Domainrichtlinie)";
+$lang['user']['waiting'] = "Warte auf Ausführung";
+$lang['user']['status'] = "Status";
+$lang['user']['running'] = "Wird ausgeführt";
 
 $lang['user']['tls_policy_warning'] = '<strong>Vorsicht:</strong> Entscheiden Sie sich unverschlüsselte Verbindungen abzulehnen, kann dies dazu führen, dass Kontakte Sie nicht mehr erreichen.<br>Nachrichten, die die Richtlinie nicht erfüllen, werden durch einen Hard-Fail im Mailsystem abgewiesen.<br>Diese Einstellung ist aktiv für die primäre Mailbox, für alle Alias-Adressen, die dieser Mailbox <b>direkt zugeordnet</b> sind (lediglich eine einzige Ziel-Adresse) und der Adressen, die sich aus Alias-Domains ergeben. Ausgeschlossen sind temporäre Aliasse ("Spam-Alias-Adressen"), Catch-All Alias-Adressen sowie Alias-Adressen mit mehreren Zielen.';
 $lang['user']['tls_policy'] = 'Verschlüsselungsrichtlinie';
@@ -554,3 +557,6 @@ $lang['admin']['remove_row'] = "Zeile entfernen";
 $lang['admin']['add_row'] = "Zeile hinzufügen";
 $lang['admin']['reset_default'] = "Auf Standard zurücksetzen";
 $lang['admin']['merged_vars_hint'] = 'Ausgegraute Zeilen wurden aus der Datei <code>vars.inc.(local.)php</code> gelesen und können nicht mittels UI verändert werden.';
+$lang['mailbox']['waiting'] = "Wartend";
+$lang['mailbox']['status'] = "Status";
+$lang['mailbox']['running'] = "In Ausführung";
\ No newline at end of file
diff --git a/data/web/lang/lang.en.php b/data/web/lang/lang.en.php
index 01996066..8832c334 100644
--- a/data/web/lang/lang.en.php
+++ b/data/web/lang/lang.en.php
@@ -160,6 +160,9 @@ $lang['user']['spamfilter_red'] = 'Red: This message is spam and will be rejecte
 $lang['user']['spamfilter_default_score'] = 'Default values:';
 $lang['user']['spamfilter_hint'] = 'The first value describes the "low spam score", the second represents the "high spam score".';
 $lang['user']['spamfilter_table_domain_policy'] = "n/a (domain policy)";
+$lang['user']['waiting'] = "Waiting";
+$lang['user']['status'] = "Status";
+$lang['user']['running'] = "Running";
 
 $lang['user']['tls_policy_warning'] = '<strong>Warning:</strong> If you decide to enforce encrypted mail transfer, you may lose emails.<br>Messages to not satisfy the policy will be bounced with a hard fail by the mail system.<br>This option applies to your primary email address (login name), all addresses derived from alias domains as well as alias addresses <b>with only this single mailbox</b> as target.';
 $lang['user']['tls_policy'] = 'Encryption policy';
@@ -567,6 +570,9 @@ $lang['admin']['remove_row'] = "Remove row";
 $lang['admin']['add_row'] = "Add row";
 $lang['admin']['reset_default'] = "Reset to default";
 $lang['admin']['merged_vars_hint'] = 'Greyed out rows were merged from <code>vars.inc.(local.)php</code> and cannot be modified.';
+$lang['mailbox']['waiting'] = "Waiting";
+$lang['mailbox']['status'] = "Status";
+$lang['mailbox']['running'] = "Running";
 
 $lang['edit']['tls_policy'] = "Change TLS policy";
 $lang['edit']['spam_score'] = "Set a custom spam score";
diff --git a/data/web/modals/mailbox.php b/data/web/modals/mailbox.php
index 0dcdfd44..192124c2 100644
--- a/data/web/modals/mailbox.php
+++ b/data/web/modals/mailbox.php
@@ -44,6 +44,7 @@ if (!isset($_SESSION['mailcow_cc_role'])) {
             </label>
             <div class="col-sm-10">
             <input type="text" class="form-control" name="quota" min="1" max="" id="addInputQuota" disabled value="<?=$lang['add']['select_domain'];?>" required>
+            <small class="help-block">min. 1</small>
             </div>
           </div>
           <div class="form-group">
@@ -344,6 +345,7 @@ if (!isset($_SESSION['mailcow_cc_role'])) {
 						<label class="control-label col-sm-2" for="port1"><?=$lang['add']['port'];?></label>
 						<div class="col-sm-10">
 						<input type="number" class="form-control" name="port1" id="port1" min="1" max="65535" value="143" required>
+            <small class="help-block">1-65535</small>
 						</div>
 					</div>
 					<div class="form-group">
@@ -372,6 +374,7 @@ if (!isset($_SESSION['mailcow_cc_role'])) {
 						<label class="control-label col-sm-2" for="mins_interval"><?=$lang['add']['mins_interval'];?></label>
 						<div class="col-sm-10">
               <input type="number" class="form-control" name="mins_interval" min="10" max="3600" value="20" required>
+              <small class="help-block">10-3600</small>
 						</div>
 					</div>
 					<div class="form-group">
@@ -384,6 +387,7 @@ if (!isset($_SESSION['mailcow_cc_role'])) {
 						<label class="control-label col-sm-2" for="maxage"><?=$lang['edit']['maxage'];?></label>
 						<div class="col-sm-10">
 						<input type="number" class="form-control" name="maxage" id="maxage" min="0" max="32000" value="0">
+            <small class="help-block">0-32000</small>
 						</div>
 					</div>
 					<div class="form-group">
diff --git a/data/web/modals/user.php b/data/web/modals/user.php
index da1e98ce..a7cc3995 100644
--- a/data/web/modals/user.php
+++ b/data/web/modals/user.php
@@ -25,6 +25,7 @@ if (!isset($_SESSION['mailcow_cc_role'])) {
 						<label class="control-label col-sm-2" for="port1"><?=$lang['add']['port'];?></label>
 						<div class="col-sm-10">
 						<input type="number" class="form-control" name="port1" id="port1" min="1" max="65535" value="143" required>
+            <small class="help-block">1-65535</small>
 						</div>
 					</div>
 					<div class="form-group">
@@ -53,6 +54,7 @@ if (!isset($_SESSION['mailcow_cc_role'])) {
 						<label class="control-label col-sm-2" for="mins_interval"><?=$lang['add']['mins_interval'];?></label>
 						<div class="col-sm-10">
               <input type="number" class="form-control" name="mins_interval" min="10" max="3600" value="20" required>
+              <small class="help-block">10-3600</small>
 						</div>
 					</div>
 					<div class="form-group">
@@ -65,6 +67,7 @@ if (!isset($_SESSION['mailcow_cc_role'])) {
 						<label class="control-label col-sm-2" for="maxage"><?=$lang['edit']['maxage'];?></label>
 						<div class="col-sm-10">
 						<input type="number" class="form-control" name="maxage" id="maxage" min="0" max="32000" value="0">
+            <small class="help-block">0-32000</small>
 						</div>
 					</div>
 					<div class="form-group">
diff --git a/docker-compose.yml b/docker-compose.yml
index ac85c6fd..e4b6e858 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -143,7 +143,7 @@ services:
             - sogo
 
     dovecot-mailcow:
-      image: mailcow/dovecot:1.11
+      image: mailcow/dovecot:1.12
       build: ./data/Dockerfiles/dovecot
       cap_add:
         - NET_BIND_SERVICE