diff --git a/plugins/kolab_addressbook/lib/rcube_kolab_contacts.php b/plugins/kolab_addressbook/lib/rcube_kolab_contacts.php
index b0096c49..365e2510 100644
--- a/plugins/kolab_addressbook/lib/rcube_kolab_contacts.php
+++ b/plugins/kolab_addressbook/lib/rcube_kolab_contacts.php
@@ -286,19 +286,20 @@ class rcube_kolab_contacts extends rcube_addressbook
             }
 
             $ids = array_keys($this->contacts);
-            $this->result->count = count($this->contacts);
         }
         else if (is_array($this->filter['ids'])) {
             $ids = $this->filter['ids'];
-            if ($this->result->count = count($ids)) {
+            if (count($ids)) {
                 $uids = array_map(array($this, 'id2uid'), $this->filter['ids']);
                 $this->_fetch_contacts(array(array('uid', '=', $uids)));
             }
+            else {
+                $this->contacts = array();
+            }
         }
         else {
             $this->_fetch_contacts();
             $ids = array_keys($this->contacts);
-            $this->result->count = count($ids);
         }
 
         // sort data arrays according to desired list sorting
@@ -309,6 +310,8 @@ class rcube_kolab_contacts extends rcube_addressbook
                 $ids = array_values(array_intersect(array_keys($this->contacts), $ids));
             else
                 $ids = array_keys($this->contacts);
+
+            $this->result->count = count($ids);
         }
 
         // fill contact data into the current result set
@@ -420,6 +423,11 @@ class rcube_kolab_contacts extends rcube_addressbook
                 $this->filter['ids'][] = $id;
         }
 
+        // dummy result with contacts count
+        if (!$select) {
+            return new rcube_result_set(count($this->filter['ids']), ($this->list_page-1) * $this->page_size);
+        }
+
         // list records (now limited by $this->filter)
         return $this->list_records();
     }
@@ -925,7 +933,7 @@ class rcube_kolab_contacts extends rcube_addressbook
      *
      * @return boolean True if input is valid, False if not.
      */
-    public function validate($save_data)
+    public function validate(&$save_data)
     {
         // validate e-mail addresses
         $valid = parent::validate($save_data);
diff --git a/plugins/kolab_auth/kolab_auth.php b/plugins/kolab_auth/kolab_auth.php
index e6171d21..b8c5996b 100644
--- a/plugins/kolab_auth/kolab_auth.php
+++ b/plugins/kolab_auth/kolab_auth.php
@@ -326,11 +326,21 @@ class kolab_auth extends rcube_plugin
         $email_attr  = $rcmail->config->get('kolab_auth_email');
         $org_attr    = $rcmail->config->get('kolab_auth_organization');
         $role_attr   = $rcmail->config->get('kolab_auth_role');
+        $imap_attr   = $rcmail->config->get('kolab_auth_mailhost');
 
         if (!empty($role_attr) && !empty($record[$role_attr])) {
             $_SESSION['user_roledns'] = (array)($record[$role_attr]);
         }
 
+        if (!empty($imap_attr) && !empty($record[$role_attr])) {
+            $default_host = $rcmail->config->get('default_host');
+            if (!empty($default_host)) {
+                rcube::write_log("errors", "Both default host and kolab_auth_mailhost set. Incompatible.");
+            } else {
+                $args['host'] = "tls://" . $record[$role_attr];
+            }
+        }
+
         // Login As...
         if (!empty($loginas) && $admin_login) {
             // Authenticate to LDAP
@@ -475,13 +485,20 @@ class kolab_auth extends rcube_plugin
      */
     public function identity_form($args)
     {
+        $rcmail      = rcube::get_instance();
+        $ident_level = intval($rcmail->config->get('identities_level', 0));
+
+        // do nothing if email address modification is disabled
+        if ($ident_level == 1 || $ident_level == 3) {
+            return $args;
+        }
+
         $ldap = self::ldap();
         if (!$ldap || !$ldap->ready || empty($_SESSION['kolab_dn'])) {
             return $args;
         }
 
-        $emails = array();
-        $rcmail = rcube::get_instance();
+        $emails      = array();
         $user_record = $ldap->get_record($_SESSION['kolab_dn']);
 
         foreach ((array)$rcmail->config->get('kolab_auth_email', array()) as $col) {
@@ -490,6 +507,10 @@ class kolab_auth extends rcube_plugin
                 $emails = array_merge($emails, array_filter($values));
         }
 
+        // kolab_delegation might want to modify this addresses list
+        $plugin = $rcmail->plugins->exec_hook('kolab_auth_emails', array('emails' => $emails));
+        $emails = $plugin['emails'];
+
         if (!empty($emails)) {
             $args['form']['addressing']['content']['email'] = array(
                 'type' => 'select',
diff --git a/plugins/kolab_auth/kolab_auth_ldap.php b/plugins/kolab_auth/kolab_auth_ldap.php
index 4584c60b..2cddb3f5 100644
--- a/plugins/kolab_auth/kolab_auth_ldap.php
+++ b/plugins/kolab_auth/kolab_auth_ldap.php
@@ -119,6 +119,7 @@ class kolab_auth_ldap extends rcube_ldap_generic
                 $entries = $result->entries(true);
                 $dn      = key($entries);
                 $entry   = array_pop($entries);
+                $entry   = rcube_ldap_generic::normalize_entry($entry);
                 $entry   = $this->field_mapping($dn, $entry);
 
                 return $entry;
@@ -287,7 +288,8 @@ class kolab_auth_ldap extends rcube_ldap_generic
                 if ($limit && $limit <= $i) {
                     break;
                 }
-                $dn = $result->get_dn();
+                $dn        = $result->get_dn();
+                $entry     = rcube_ldap_generic::normalize_entry($entry);
                 $list[$dn] = $this->field_mapping($dn, $entry);
                 $i++;
             }
diff --git a/plugins/kolab_delegation/kolab_delegation.php b/plugins/kolab_delegation/kolab_delegation.php
index 156e81f4..23e0107c 100644
--- a/plugins/kolab_delegation/kolab_delegation.php
+++ b/plugins/kolab_delegation/kolab_delegation.php
@@ -55,6 +55,9 @@ class kolab_delegation extends rcube_plugin
         $this->add_hook('calendar_list_filter', array($this, 'calendar_list_filter'));
         $this->add_hook('calendar_load_itip', array($this, 'calendar_load_itip'));
 
+        // delegation support in kolab_auth plugin
+        $this->add_hook('kolab_auth_emails', array($this, 'kolab_auth_emails'));
+
         if ($this->rc->task == 'settings') {
             // delegation management interface
             $this->register_action('plugin.delegation',              array($this, 'controller_ui'));
@@ -240,6 +243,27 @@ class kolab_delegation extends rcube_plugin
         }
     }
 
+    /**
+     * Delegation support in kolab_auth plugin
+     */
+    public function kolab_auth_emails($args)
+    {
+        // Add delegators addresses to address selector in user identity form
+
+        if (!empty($_SESSION['delegators'])) {
+            // @TODO: Consider not adding all delegator addresses to the list.
+            // Instead add only address of currently edited identity
+            foreach ($_SESSION['delegators'] as $emails) {
+                $args['emails'] = array_merge($args['emails'], $emails);
+            }
+
+            $args['emails'] = array_unique($args['emails']);
+            sort($args['emails']);
+        }
+
+        return $args;
+    }
+
     /**
      * Delegation UI handler
      */