diff --git a/doc/conf.py b/doc/conf.py
index b337042cc..44f06ec80 100644
--- a/doc/conf.py
+++ b/doc/conf.py
@@ -50,7 +50,7 @@ copyright = u'2014, Antoine Nguyen'
 # The short X.Y version.
 version = '1.2'
 # The full version, including alpha/beta/rc tags.
-release = '1.2.0'
+release = '1.2.1'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.
diff --git a/modoboa/core/models.py b/modoboa/core/models.py
index 93df9a416..80b77bb15 100644
--- a/modoboa/core/models.py
+++ b/modoboa/core/models.py
@@ -90,6 +90,7 @@ class User(PermissionsMixin):
         for ooentry in self.objectaccess_set.filter(is_owner=True):
             if ooentry.content_object is not None:
                 grant_access_to_object(owner, ooentry.content_object, True)
+                ungrant_access_to_object(ooentry.content_object, self)
 
         events.raiseEvent("AccountDeleted", self, fromuser, **kwargs)
         ungrant_access_to_object(self)
diff --git a/modoboa/lib/form_utils.py b/modoboa/lib/form_utils.py
index da18fa26b..c52a94a39 100644
--- a/modoboa/lib/form_utils.py
+++ b/modoboa/lib/form_utils.py
@@ -344,17 +344,19 @@ class TabForms(object):
 #
 
 
-def is_valid_host(host):
-    """IDN compatible domain validator."""
-    host = host.encode('idna').lower()
-    if not hasattr(is_valid_host, '_re'):
-        is_valid_host._re = re.compile(
-            r'^([0-9a-z][-\w]*[0-9a-z]\.)+[a-z0-9\-]{2,15}$')
-    return bool(is_valid_host._re.match(host))
+def is_valid_hostname(hostname):
+    """Domain name validaton."""
+    if len(hostname) > 255:
+        return False
+    if hostname[-1] == ".":
+        hostname = hostname[:-1]  # strip exactly one dot from the
+                                  # right, if present
+    allowed = re.compile(r"(?!-)[A-Z\d-]{1,63}(?<!-)$", re.IGNORECASE)
+    return all(allowed.match(x) for x in hostname.split("."))
 
 
 def validate_domain_name(value):
-    if not is_valid_host(value):
+    if not is_valid_hostname(value):
         raise ValidationError(_('Enter a valid domain name'), 'invalid')
 
 
diff --git a/modoboa/lib/permissions.py b/modoboa/lib/permissions.py
index 661db46fb..c993c2b04 100644
--- a/modoboa/lib/permissions.py
+++ b/modoboa/lib/permissions.py
@@ -48,22 +48,15 @@ def grant_access_to_object(user, obj, is_owner=False):
     :param obj: an admin. object (Domain, Mailbox, ...)
     :param is_owner: the user is the unique object's owner
     """
-    ct = ContentType.objects.get_for_model(obj)
-    try:
-        entry = user.objectaccess_set.get(content_type=ct, object_id=obj.id)
-        entry.is_owner = is_owner
-        entry.save()
-    except ObjectAccess.DoesNotExist:
-        pass
-    else:
-        return
-
-    ObjectAccess.objects.create(
-        user=user, content_type=ct, object_id=obj.id, is_owner=is_owner
-    )
-    if not is_owner:
-        return
     from modoboa.core.models import User
+
+    ct = ContentType.objects.get_for_model(obj)
+    entry, created = ObjectAccess.objects.get_or_create(
+        user=user, content_type=ct, object_id=obj.id)
+    entry.is_owner = is_owner
+    entry.save()
+    if not created or not is_owner:
+        return
     for su in User.objects.filter(is_superuser=True):
         if su == user:
             continue
@@ -83,11 +76,8 @@ def grant_access_to_objects(user, objects, ct):
     :param ct: the content type
     """
     for obj in objects:
-        try:
-            ObjectAccess.objects.create(
-                user=user, content_type=ct, object_id=obj.id)
-        except IntegrityError:
-            pass
+        ObjectAccess.objects.get_or_create(
+            user=user, content_type=ct, object_id=obj.id)
 
 
 def ungrant_access_to_object(obj, user=None):
diff --git a/modoboa/templates/registration/login.html b/modoboa/templates/registration/login.html
index d01a6781b..838588b14 100644
--- a/modoboa/templates/registration/login.html
+++ b/modoboa/templates/registration/login.html
@@ -5,6 +5,8 @@
 <html lang="{{ LANGUAGE_CODE }}">
   <head>
     <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
     <title>{% trans "Welcome to Modoboa" %}</title>
     <link rel="icon" type="image/png" href="{% static 'css/logo-icon.png' %}" />
     <link rel="stylesheet" type="text/css" href="{% static 'bootstrap/dist/css/bootstrap.min.css' %}" />
diff --git a/setup.py b/setup.py
index d1726d0a4..9e950373e 100644
--- a/setup.py
+++ b/setup.py
@@ -54,7 +54,7 @@ def read(fname):
 
 setup(
     name="modoboa",
-    version='1.2.0',
+    version='1.2.1',
     url='http://modoboa.org/',
     license='MIT',
     description="Mail hosting made simple",