diff --git a/TODO.md b/TODO.md
index b783c23c..700d5139 100644
--- a/TODO.md
+++ b/TODO.md
@@ -457,18 +457,13 @@ mkhomedir_helper or create ssh homes with bash.rc and such
 * setuppostgres use porject_name for db name and user instead of orchestra
 
 
-
-
 # POSTFIX web traffic monitor '": uid=" from=<%(user)s>'
 
-
 # Mv .deleted make sure it works with nested destinations
-# Re-run backends (save regenerate, delete run same script) warning on confirmation page: DELETED objects will be deleted on the server if you have recreated them.
 # Automatically re-run backends until success? only timedout executions?
 
 
 
-
 ### Quick start
     0. Install orchestra following any of these methods:
         1. [PIP-only, Fast deployment setup (demo)](README.md#fast-deployment-setup)
diff --git a/orchestra/contrib/mailboxes/forms.py b/orchestra/contrib/mailboxes/forms.py
index ae2dd213..1675af03 100644
--- a/orchestra/contrib/mailboxes/forms.py
+++ b/orchestra/contrib/mailboxes/forms.py
@@ -49,7 +49,7 @@ class MailboxForm(forms.ModelForm):
         name = self.cleaned_data['name']
         max_length = settings.MAILBOXES_NAME_MAX_LENGTH
         if len(name) > max_length:
-            raise ValidationError("Name length should be less than %i" % max_length)
+            raise ValidationError("Name length should be less than %i." % max_length)
         return name
 
 
@@ -61,7 +61,7 @@ class MailboxCreationForm(UserCreationForm, MailboxForm):
     def clean_name(self):
         # Since model.clean() will check this, this is redundant,
         # but it sets a nicer error message than the ORM and avoids conflicts with contrib.auth
-        name = self.cleaned_data["name"]
+        name = super().clean_name()
         try:
             self._meta.model._default_manager.get(name=name)
         except self._meta.model.DoesNotExist:
diff --git a/orchestra/contrib/orchestration/__init__.py b/orchestra/contrib/orchestration/__init__.py
index 76880092..b5aded20 100644
--- a/orchestra/contrib/orchestration/__init__.py
+++ b/orchestra/contrib/orchestration/__init__.py
@@ -1,6 +1,8 @@
 import collections
 import copy
 
+from orchestra.utils.python import AttrDict
+
 from .backends import ServiceBackend, ServiceController, replace
 
 
@@ -77,3 +79,13 @@ class Operation():
             instance=self.instance,
             action=self.action,
         )
+    
+    @classmethod
+    def load(cls, operation, log=None):
+        routes = None
+        if log:
+            routes = {
+                (operation.backend, operation.action): AttrDict(host=log.server)
+            }
+        return cls(operation.backend_class, operation.instance, operation.action, routes=routes)
+    
diff --git a/orchestra/contrib/orchestration/actions.py b/orchestra/contrib/orchestration/actions.py
new file mode 100644
index 00000000..cb94b7ce
--- /dev/null
+++ b/orchestra/contrib/orchestration/actions.py
@@ -0,0 +1,63 @@
+from django.contrib import messages
+from django.contrib.admin import helpers
+from django.shortcuts import render
+from django.utils.safestring import mark_safe
+from django.utils.translation import ungettext, ugettext_lazy as _
+
+from orchestra.admin.utils import get_object_from_url, change_url
+from orchestra.contrib.orchestration.helpers import message_user
+
+from . import Operation
+from .models import BackendOperation
+
+
+def retry_backend(modeladmin, request, queryset):
+    if request.POST.get('post') == 'generic_confirmation':
+        operations = []
+        for log in queryset.prefetch_related('operations__instance'):
+            for operation in log.operations.all():
+                if operation.instance:
+                    op = Operation.load(operation)
+                    operations.append(op)
+        if not operations:
+            messages.warning(request, _("No backend operation has been executed."))
+        else:
+            logs = Operation.execute(operations)
+            message_user(request, logs)
+        Operation.execute(operations)
+        return
+    opts = modeladmin.model._meta
+    display_objects = []
+    deleted_objects = []
+    related_operations = queryset.values_list('operations__id', flat=True).distinct()
+    related_operations = BackendOperation.objects.filter(pk__in=related_operations)
+    for op in related_operations.select_related('log__server').prefetch_related('instance'):
+        if not op.instance:
+            deleted_objects.append(op)
+        else:
+            context = {
+                'backend': op.log.backend,
+                'action': op.action,
+                'instance': op.instance,
+                'instance_url': change_url(op.instance),
+                'server': op.log.server,
+                'server_url': change_url(op.log.server),
+            }
+            display_objects.append(mark_safe(
+                '%(backend)s.%(action)s(<a href="%(instance_url)s">%(instance)s</a>) @ <a href="%(server_url)s">%(server)s</a>' % context
+            ))
+    context = {
+        'title': _("Are you sure to execute the following backends?"),
+        'action_name': _('Retry backend'),
+        'action_value': 'retry_backend',
+        'display_objects': display_objects,
+        'deleted_objects': deleted_objects,
+        'queryset': queryset,
+        'opts': opts,
+        'app_label': opts.app_label,
+        'action_checkbox_name': helpers.ACTION_CHECKBOX_NAME,
+        'obj': get_object_from_url(modeladmin, request),
+    }
+    return render(request, 'admin/orchestration/backends/retry.html', context)
+retry_backend.short_description = _("Retry")
+retry_backend.url_name = 'retry'
diff --git a/orchestra/contrib/orchestration/admin.py b/orchestra/contrib/orchestration/admin.py
index 000dadf9..80ff6213 100644
--- a/orchestra/contrib/orchestration/admin.py
+++ b/orchestra/contrib/orchestration/admin.py
@@ -3,11 +3,12 @@ from django.utils.html import escape
 from django.utils.safestring import mark_safe
 from django.utils.translation import ugettext_lazy as _
 
-from orchestra.admin import ExtendedModelAdmin
+from orchestra.admin import ExtendedModelAdmin, ChangeViewActionsMixin
 from orchestra.admin.utils import admin_link, admin_date, admin_colored, display_mono, display_code
 from orchestra.plugins.admin import display_plugin_field
 
 from . import settings, helpers
+from .actions import retry_backend
 from .backends import ServiceBackend
 from .forms import RouteForm
 from .models import Server, Route, BackendLog, BackendOperation
@@ -128,7 +129,7 @@ class BackendOperationInline(admin.TabularInline):
         return queryset.prefetch_related('instance')
 
 
-class BackendLogAdmin(admin.ModelAdmin):
+class BackendLogAdmin(ChangeViewActionsMixin, admin.ModelAdmin):
     list_display = (
         'id', 'backend', 'server_link', 'display_state', 'exit_code',
         'display_created', 'execution_time',
@@ -144,6 +145,8 @@ class BackendLogAdmin(admin.ModelAdmin):
         'execution_time'
     )
     readonly_fields = fields
+    actions = (retry_backend,)
+    change_view_actions = actions
     
     server_link = admin_link('server')
     display_created = admin_date('created_at', short_description=_("Created"))
diff --git a/orchestra/contrib/orchestration/methods.py b/orchestra/contrib/orchestration/methods.py
index 8596b03c..fde43b4b 100644
--- a/orchestra/contrib/orchestration/methods.py
+++ b/orchestra/contrib/orchestration/methods.py
@@ -149,9 +149,14 @@ def SSH(*args, **kwargs):
 
 def Python(backend, log, server, cmds, async=False):
     script = ''
+    functions = set()
+    for cmd in cmds:
+        if cmd.func not in functions:
+            functions.add(cmd.func)
+            script += textwrap.dedent(''.join(inspect.getsourcelines(cmd.func)[0]))
+    script += '\n'
     for cmd in cmds:
         script += '# %s %s\n' % (cmd.func.__name__, cmd.args)
-        script += textwrap.dedent(''.join(inspect.getsourcelines(cmd.func)[0]))
     log.state = log.STARTED
     log.script = '\n'.join((log.script, script))
     log.save(update_fields=('script', 'state', 'updated_at'))
diff --git a/orchestra/contrib/orchestration/models.py b/orchestra/contrib/orchestration/models.py
index bcd45464..c99cbd52 100644
--- a/orchestra/contrib/orchestration/models.py
+++ b/orchestra/contrib/orchestration/models.py
@@ -150,7 +150,7 @@ class BackendOperation(models.Model):
         verbose_name_plural = _("Operations")
     
     def __str__(self):
-        return '%s.%s(%s)' % (self.backend, self.action, self.instance)
+        return '%s.%s(%s)' % (self.backend, self.action, self.instance or self.instance_repr)
     
     @cached_property
     def backend_class(self):
diff --git a/orchestra/contrib/orchestration/templates/admin/orchestration/backends/retry.html b/orchestra/contrib/orchestration/templates/admin/orchestration/backends/retry.html
new file mode 100644
index 00000000..65f2147b
--- /dev/null
+++ b/orchestra/contrib/orchestration/templates/admin/orchestration/backends/retry.html
@@ -0,0 +1,9 @@
+{% extends "admin/orchestra/generic_confirmation.html" %}
+
+
+{% block form %}
+    {% if deleted_objects %}
+        <h4>The following operations refere to deleted objects and will not be executed</h4>
+        <ul>{{ deleted_objects | unordered_list }}</ul>
+    {% endif %}
+{% endblock %}
diff --git a/orchestra/contrib/systemusers/actions.py b/orchestra/contrib/systemusers/actions.py
index 24194ae1..f896e797 100644
--- a/orchestra/contrib/systemusers/actions.py
+++ b/orchestra/contrib/systemusers/actions.py
@@ -53,7 +53,7 @@ def set_permission(modeladmin, request, queryset):
                 msg = _("%(action)s %(perms)s permission to %(to)s") % context
                 modeladmin.log_change(request, user, msg)
             if not operations:
-                messages.error(request, "No backend operation has been executed.")
+                messages.error(request, _("No backend operation has been executed."))
             else:
                 logs = Operation.execute(operations)
                 helpers.message_user(request, logs)
diff --git a/orchestra/contrib/webapps/types/php.py b/orchestra/contrib/webapps/types/php.py
index fdbc279b..3ab2c4df 100644
--- a/orchestra/contrib/webapps/types/php.py
+++ b/orchestra/contrib/webapps/types/php.py
@@ -7,6 +7,7 @@ from rest_framework import serializers
 
 from orchestra.plugins.forms import PluginDataForm
 from orchestra.utils.functional import cached
+from orchestra.utils.python import OrderedSet
 
 from .. import settings, utils
 from ..options import AppOption
@@ -89,12 +90,13 @@ class PHPApp(AppType):
                     init_vars[name] = value
         # Disable functions
         if self.PHP_DISABLED_FUNCTIONS:
-            enable_functions = init_vars.pop('enable_functions', '')
-            disable_functions = set(init_vars.pop('disable_functions', '').split(','))
+            enable_functions = init_vars.pop('enable_functions', None)
+            enable_functions = OrderedSet(enable_functions.split(',') if enable_functions else ())
+            disable_functions = init_vars.pop('disable_functions', None)
+            disable_functions = OrderedSet(disable_functions.split(',') if disable_functions else ())
             if disable_functions or enable_functions or self.is_fpm:
                 # FPM: Defining 'disable_functions' or 'disable_classes' will not overwrite previously
                 #      defined php.ini values, but will append the new value
-                enable_functions = set(enable_functions.split(','))
                 for function in self.PHP_DISABLED_FUNCTIONS:
                     if function not in enable_functions:
                         disable_functions.add(function)
@@ -119,6 +121,7 @@ class PHPApp(AppType):
             init_vars['post_max_size'] = post_max_size
             if upload_max_filesize_value > post_max_size_value:
                 init_vars['post_max_size'] = upload_max_filesize
+        print(init_vars)
         return init_vars
     
     def get_directive_context(self):