diff --git a/machines/admin.py b/machines/admin.py
index 658d8f85..b2550c68 100644
--- a/machines/admin.py
+++ b/machines/admin.py
@@ -1,7 +1,7 @@
 from django.contrib import admin
 from reversion.admin import VersionAdmin
 
-from .models import IpType, Machine, MachineType, Alias, IpList, Interface, Extension
+from .models import IpType, Machine, MachineType, Alias, IpList, Interface, Extension, Mx, Ns
 
 class MachineAdmin(VersionAdmin):
     list_display = ('user','name','active')
@@ -16,6 +16,12 @@ class MachineTypeAdmin(VersionAdmin):
 class ExtensionAdmin(VersionAdmin):
     list_display = ('name',)
 
+class MxAdmin(VersionAdmin):
+    list_display = ('zone', 'priority', 'name')
+
+class NsAdmin(VersionAdmin):
+    list_display = ('zone', 'interface')
+
 class IpListAdmin(VersionAdmin):
     list_display = ('ipv4','ip_type')
 
@@ -29,6 +35,8 @@ admin.site.register(Machine, MachineAdmin)
 admin.site.register(MachineType, MachineTypeAdmin)
 admin.site.register(IpType, IpTypeAdmin)
 admin.site.register(Extension, ExtensionAdmin)
+admin.site.register(Mx, MxAdmin)
+admin.site.register(Ns, NsAdmin)
 admin.site.register(IpList, IpListAdmin)
 admin.site.register(Interface, InterfaceAdmin)
 admin.site.register(Alias, AliasAdmin)
diff --git a/machines/forms.py b/machines/forms.py
index 9ee9558e..6b3d905e 100644
--- a/machines/forms.py
+++ b/machines/forms.py
@@ -1,6 +1,6 @@
 from django.forms import ModelForm, Form, ValidationError
 from django import forms
-from .models import Alias, Machine, Interface, IpList, MachineType, Extension, IpType
+from .models import Alias, Machine, Interface, IpList, MachineType, Extension, Mx, Ns, IpType
 
 class EditMachineForm(ModelForm):
     class Meta:
@@ -62,11 +62,18 @@ class BaseEditInterfaceForm(EditInterfaceForm):
 class NewAliasForm(ModelForm):
     class Meta:
         model = Alias
-        fields = ['alias']
+        fields = ['alias','extension']
 
-class EditAliasFullForm(NewAliasForm):
+class EditAliasForm(NewAliasForm):
     class Meta(NewAliasForm.Meta):
-        fields = '__all__'
+        fields = ['alias','extension']
+
+class DelAliasForm(ModelForm):
+    del_alias = forms.ModelMultipleChoiceField(queryset=Alias.objects.all(), label="Alias actuels",  widget=forms.CheckboxSelectMultiple)
+
+    class Meta:
+        exclude = ['interface_parent', 'alias', 'extension']
+        model = Alias
 
 class MachineTypeForm(ModelForm):
     class Meta:
@@ -117,3 +124,16 @@ class DelExtensionForm(ModelForm):
     class Meta:
         exclude = ['name']
         model = Extension
+
+class MxForm(ModelForm):
+    class Meta:
+        model = Mx
+        fields = ['zone', 'priority', 'name']
+        
+class DelMxForm(ModelForm):
+    mx = forms.ModelMultipleChoiceField(queryset=Mx.objects.all(), label="MX actuels",  widget=forms.CheckboxSelectMultiple)
+
+    class Meta:
+        exclude = ['zone', 'priority', 'name']
+        model = Mx
+
diff --git a/machines/migrations/0031_auto_20161119_1709.py b/machines/migrations/0031_auto_20161119_1709.py
new file mode 100644
index 00000000..35387793
--- /dev/null
+++ b/machines/migrations/0031_auto_20161119_1709.py
@@ -0,0 +1,43 @@
+# -*- coding: utf-8 -*-
+from __future__ import unicode_literals
+
+from django.db import migrations, models
+import django.db.models.deletion
+import django.core.validators
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('machines', '0030_auto_20161118_1730'),
+    ]
+
+    operations = [
+        migrations.CreateModel(
+            name='Mx',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, verbose_name='ID', serialize=False)),
+                ('priority', models.IntegerField(unique=True)),
+                ('name', models.OneToOneField(on_delete=django.db.models.deletion.PROTECT, to='machines.Alias')),
+                ('zone', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, to='machines.Extension')),
+            ],
+        ),
+        migrations.CreateModel(
+            name='Ns',
+            fields=[
+                ('id', models.AutoField(auto_created=True, primary_key=True, verbose_name='ID', serialize=False)),
+                ('interface', models.OneToOneField(on_delete=django.db.models.deletion.PROTECT, to='machines.Interface')),
+                ('zone', models.ForeignKey(on_delete=django.db.models.deletion.PROTECT, to='machines.Extension')),
+            ],
+        ),
+        migrations.AlterField(
+            model_name='iptype',
+            name='domaine_ip',
+            field=models.GenericIPAddressField(protocol='IPv4'),
+        ),
+        migrations.AlterField(
+            model_name='iptype',
+            name='domaine_range',
+            field=models.IntegerField(validators=[django.core.validators.MinValueValidator(8), django.core.validators.MaxValueValidator(32)]),
+        ),
+    ]
diff --git a/machines/models.py b/machines/models.py
index 0e2e264d..bf1eca2e 100644
--- a/machines/models.py
+++ b/machines/models.py
@@ -34,8 +34,8 @@ class IpType(models.Model):
     type = models.CharField(max_length=255)
     extension = models.ForeignKey('Extension', on_delete=models.PROTECT)
     need_infra = models.BooleanField(default=False)
-    domaine_ip = models.GenericIPAddressField(protocol='IPv4', unique=True, blank=True, null=True)
-    domaine_range = models.IntegerField(blank=True, null=True, validators=[MinValueValidator(8), MaxValueValidator(32)])
+    domaine_ip = models.GenericIPAddressField(protocol='IPv4')
+    domaine_range = models.IntegerField(validators=[MinValueValidator(8), MaxValueValidator(32)])
 
     def __str__(self):
         return self.type
@@ -48,6 +48,22 @@ class Extension(models.Model):
     def __str__(self):
         return self.name
 
+class Mx(models.Model):
+    PRETTY_NAME = "Enregistrements MX"
+
+    zone = models.ForeignKey('Extension', on_delete=models.PROTECT)
+    priority = models.IntegerField(unique=True)
+    name = models.OneToOneField('Alias', on_delete=models.PROTECT)
+
+    def __str__(self):
+        return str(self.zone) + ' ' + str(self.priority) + ' ' + str(self.name)
+
+class Ns(models.Model):
+    PRETTY_NAME = "Enregistrements NS"
+
+    zone = models.ForeignKey('Extension', on_delete=models.PROTECT)
+    interface = models.OneToOneField('Interface', on_delete=models.PROTECT)
+
 class Interface(models.Model):
     PRETTY_NAME = "Interface"
 
@@ -92,7 +108,7 @@ class Alias(models.Model):
             raise ValidationError("Impossible d'ajouter l'alias, déjà utilisé par une machine")
 
     def __str__(self):
-        return self.alias
+        return str(self.alias) + str(self.extension)
 
 class IpList(models.Model):
     PRETTY_NAME = "Addresses ipv4"
diff --git a/machines/templates/machines/aff_machines.html b/machines/templates/machines/aff_machines.html
index 2eff473c..75011282 100644
--- a/machines/templates/machines/aff_machines.html
+++ b/machines/templates/machines/aff_machines.html
@@ -36,8 +36,8 @@
                     <ul class="dropdown-menu" aria-labelledby="editioninterface">
                     {% for al in interface.alias_set.all %}
                         <li>
-                            <a href="http://{{ al }}{{ al.extension }}">
-                                {{ al }}{{ al.extension }}
+                            <a href="http://{{ al }}">
+                                {{ al }}
                                 <i class="glyphicon glyphicon-share-alt"></i>
                             </a>
                         </li>
diff --git a/machines/templates/machines/aff_mx.html b/machines/templates/machines/aff_mx.html
new file mode 100644
index 00000000..1bfd28eb
--- /dev/null
+++ b/machines/templates/machines/aff_mx.html
@@ -0,0 +1,26 @@
+    <table class="table table-striped">
+        <thead>
+            <tr>
+		    <th>Zone concernée</th>
+		    <th>Priorité</th>
+		    <th>Enregistrement</th>
+		    <th></th>
+                <th></th>
+            </tr>
+        </thead>
+        {% for mx in mx_list %}
+        <tr>
+            <td>{{ mx.zone }}</td>
+	    <td>{{ mx.priority }}</td>
+	    <td>{{ mx.name }}</td>
+            <td class="text-right">
+            {% if is_infra %}
+            {% include 'buttons/edit.html' with href='machines:edit-mx' id=mx.id %}
+            {% endif %}
+            {% include 'buttons/history.html' with href='machines:history' name='mx' id=mx.id %}
+            </td>
+        </tr>
+        {% endfor %}
+    </table>
+
+
diff --git a/machines/templates/machines/index_extension.html b/machines/templates/machines/index_extension.html
index e27e59b6..d058f805 100644
--- a/machines/templates/machines/index_extension.html
+++ b/machines/templates/machines/index_extension.html
@@ -10,8 +10,15 @@
   <a class="btn btn-danger btn-sm" role="button" href="{% url 'machines:del-extension'  %}"><i class="glyphicon glyphicon-trash"></i> Supprimer une ou plusieurs extensions</a>
   {% endif %}
   {%  include "machines/aff_extension.html" with  extension_list=extension_list %}
-  <br />
-  <br />
-  <br />
-{% endblock %}
+
+  <h2>Liste des enregistrements MX</h2>
+   {% if is_infra %}
+   <a class="btn btn-primary btn-sm" role="button" href="{% url 'machines:add-mx'  %}"><i class="glyphicon glyphicon-plus"></i> Ajouter un enregistrement MX</a>
+   <a class="btn btn-danger btn-sm" role="button" href="{% url 'machines:del-mx'  %}"><i class="glyphicon glyphicon-trash"></i> Supprimer un enregistrement MX</a>
+   {% endif %}
+   {%  include "machines/aff_mx.html" with  mx_list=mx_list %}
+  <br />
+  <br />
+  <br />
+  {% endblock %}
 
diff --git a/machines/urls.py b/machines/urls.py
index 78d3b671..e3f47578 100644
--- a/machines/urls.py
+++ b/machines/urls.py
@@ -8,6 +8,7 @@ urlpatterns = [
     url(r'^del_machine/(?P<machineid>[0-9]+)$', views.del_machine, name='del-machine'),
     url(r'^new_interface/(?P<machineid>[0-9]+)$', views.new_interface, name='new-interface'),
     url(r'^del_interface/(?P<interfaceid>[0-9]+)$', views.del_interface, name='del-interface'),
+    url(r'^manage_alias/(?P<interfaceid>[0-9]+)$', views.manage_alias, name='manage-alias'),
     url(r'^add_machinetype/$', views.add_machinetype, name='add-machinetype'),
     url(r'^edit_machinetype/(?P<machinetypeid>[0-9]+)$', views.edit_machinetype, name='edit-machinetype'),
     url(r'^del_machinetype/$', views.del_machinetype, name='del-machinetype'),
@@ -19,11 +20,15 @@ urlpatterns = [
     url(r'^add_extension/$', views.add_extension, name='add-extension'),
     url(r'^edit_extension/(?P<extensionid>[0-9]+)$', views.edit_extension, name='edit-extension'),
     url(r'^del_extension/$', views.del_extension, name='del-extension'),
+    url(r'^add_mx/$', views.add_mx, name='add-mx'),
+    url(r'^edit_mx/(?P<mxid>[0-9]+)$', views.edit_mx, name='edit-mx'),
+    url(r'^del_mx/$', views.del_mx, name='del-mx'),
     url(r'^index_extension/$', views.index_extension, name='index-extension'),
     url(r'^history/(?P<object>machine)/(?P<id>[0-9]+)$', views.history, name='history'),
     url(r'^history/(?P<object>interface)/(?P<id>[0-9]+)$', views.history, name='history'),
     url(r'^history/(?P<object>machinetype)/(?P<id>[0-9]+)$', views.history, name='history'),
     url(r'^history/(?P<object>extension)/(?P<id>[0-9]+)$', views.history, name='history'),
+    url(r'^history/(?P<object>mx)/(?P<id>[0-9]+)$', views.history, name='history'),
     url(r'^history/(?P<object>iptype)/(?P<id>[0-9]+)$', views.history, name='history'),
     url(r'^$', views.index, name='index'),
     url(r'^rest/mac-ip/$', views.mac_ip, name='mac-ip'),
diff --git a/machines/views.py b/machines/views.py
index d7abcada..8dd15711 100644
--- a/machines/views.py
+++ b/machines/views.py
@@ -22,8 +22,8 @@ from reversion import revisions as reversion
 
 import re
 from .forms import NewMachineForm, EditMachineForm, EditInterfaceForm, AddInterfaceForm, MachineTypeForm, DelMachineTypeForm, ExtensionForm, DelExtensionForm, BaseEditInterfaceForm, BaseEditMachineForm, Alias
-from .forms import IpTypeForm, DelIpTypeForm, NewAliasForm, EditAliasFullForm
-from .models import IpType, Machine, Interface, IpList, MachineType, Extension
+from .forms import IpTypeForm, DelIpTypeForm, NewAliasForm, EditAliasForm, MxForm, DelMxForm
+from .models import IpType, Machine, Interface, IpList, MachineType, Extension, Mx, Ns
 from users.models import User
 from re2o.settings import PAGINATION_NUMBER, PAGINATION_LARGE_NUMBER
 
@@ -146,6 +146,19 @@ def edit_interface(request, interfaceid):
             return redirect("/users/profil/" + str(interface.machine.user.id))
     return form({'machineform': machine_form, 'interfaceform': interface_form}, 'machines/machine.html', request)
 
+@login_required
+def manage_alias(request, interfaceid):
+    try:
+        interface = Interface.objects.get(pk=interfaceid)
+    except Interface.DoesNotExist:
+        messages.error(request, u"Interface inexistante" )
+        return redirect("/machines")
+    if not request.user.has_perms(('infra',)):
+        if not request.user.has_perms(('cableur',)) and interface.machine.user != request.user:
+            messages.error(request, "Vous ne pouvez pas éditer une machine d'un autre user que vous sans droit")
+            return redirect("/users/profil/" + str(request.user.id))
+
+
 @login_required
 def del_machine(request, machineid):
     try:
@@ -356,6 +369,54 @@ def del_extension(request):
         return redirect("/machines/index_extension")
     return form({'machineform': extension, 'interfaceform': None}, 'machines/machine.html', request)
 
+@login_required
+@permission_required('infra')
+def add_mx(request):
+    mx = MxForm(request.POST or None)
+    if mx.is_valid():
+        with transaction.atomic(), reversion.create_revision():
+            mx.save()
+            reversion.set_user(request.user)
+            reversion.set_comment("Création")
+        messages.success(request, "Cet enregistrement mx a été ajouté")
+        return redirect("/machines/index_extension")
+    return form({'machineform': mx, 'interfaceform': None}, 'machines/machine.html', request)
+
+@login_required
+@permission_required('infra')
+def edit_mx(request, mxid):
+    try:
+        mx_instance = Mx.objects.get(pk=mxid)
+    except Mx.DoesNotExist:
+        messages.error(request, u"Entrée inexistante" )
+        return redirect("/machines/index_extension/")
+    mx = MxForm(request.POST or None, instance=mx_instance)
+    if mx.is_valid():
+        with transaction.atomic(), reversion.create_revision():
+            mx.save()
+            reversion.set_user(request.user)
+            reversion.set_comment("Champs modifié(s) : %s" % ', '.join(field for field in mx.changed_data))
+        messages.success(request, "Mx modifié")
+        return redirect("/machines/index_extension/")
+    return form({'machineform': mx}, 'machines/machine.html', request)
+
+@login_required
+@permission_required('infra')
+def del_mx(request):
+    mx = DelMxForm(request.POST or None)
+    if mx.is_valid():
+        mx_dels = mx.cleaned_data['mx']
+        for mx_del in mx_dels:
+            try:
+                with transaction.atomic(), reversion.create_revision():
+                    mx_del.delete()
+                    reversion.set_user(request.user)
+                messages.success(request, "L'mx a été supprimée")
+            except ProtectedError:
+                messages.error(request, "Erreur le Mx suivant %s ne peut être supprimé" % mx_del)
+        return redirect("/machines/index_extension")
+    return form({'machineform': mx, 'interfaceform': None}, 'machines/machine.html', request)
+
 @login_required
 @permission_required('cableur')
 def index(request):
@@ -388,7 +449,9 @@ def index_machinetype(request):
 @permission_required('cableur')
 def index_extension(request):
     extension_list = Extension.objects.order_by('name')
-    return render(request, 'machines/index_extension.html', {'extension_list':extension_list})
+    mx_list = Mx.objects.order_by('zone')
+    ns_list = Ns.objects.order_by('zone')
+    return render(request, 'machines/index_extension.html', {'extension_list':extension_list, 'mx_list': mx_list, 'ns_list': ns_list})
 
 @login_required
 def history(request, object, id):
@@ -428,6 +491,12 @@ def history(request, object, id):
         except Extension.DoesNotExist:
              messages.error(request, "Extension inexistante")
              return redirect("/machines/")
+    elif object == 'mx' and request.user.has_perms(('cableur',)):
+        try:
+             object_instance = Mx.objects.get(pk=id)
+        except Mx.DoesNotExist:
+             messages.error(request, "Mx inexistant")
+             return redirect("/machines/")
     else:
         messages.error(request, "Objet  inconnu")
         return redirect("/machines/")