diff --git a/roundcubemail/program/lib/Roundcube/rcube_ldap.php b/roundcubemail/program/lib/Roundcube/rcube_ldap.php

index 6778d9b..abccfc2 100644

--- a/roundcubemail/program/lib/Roundcube/rcube_ldap.php

+++ b/roundcubemail/program/lib/Roundcube/rcube_ldap.php

@@ -285,6 +285,7 @@ class rcube_ldap extends rcube_addressbook

             $bind_pass = $this->prop['bind_pass'];

             $bind_user = $this->prop['bind_user'];

             $bind_dn   = $this->prop['bind_dn'];

+	    $auth_method = $this->prop['auth_method'];

             $this->base_dn        = $this->prop['base_dn'];

             $this->groups_base_dn = $this->prop['groups']['base_dn'] ?: $this->base_dn;

@@ -420,10 +421,12 @@ class rcube_ldap extends rcube_addressbook

                 }

             }

-            if (empty($bind_pass)) {

+            if (empty($bind_pass) and (strcmp($auth_method,GSSAPI) !== 0)) {

                 $this->ready = true;

             }

             else {

+                if (!empty($_SERVER['KRB5CCNAME'])){

+                    putenv("KRB5CCNAME={$_SERVER['KRB5CCNAME']}");}

                 if (!empty($bind_dn)) {

                     $this->ready = $this->ldap->bind($bind_dn, $bind_pass);

                 }