diff --git a/modoboa/core/views/admin.py b/modoboa/core/views/admin.py
index 678c41caf..071e1091a 100644
--- a/modoboa/core/views/admin.py
+++ b/modoboa/core/views/admin.py
@@ -25,7 +25,6 @@ def viewsettings(request, tplname='core/settings_header.html'):
 @user_passes_test(lambda u: u.is_superuser)
 def viewparameters(request, tplname='core/parameters.html'):
     return render_to_json_response({
-        "status": "ok",
         "left_selection": "parameters",
         "content": _render_to_string(request, tplname, {
             "forms": parameters.get_admin_forms
diff --git a/modoboa/extensions/admin/__init__.py b/modoboa/extensions/admin/__init__.py
index 7cfd3d63a..281fac420 100644
--- a/modoboa/extensions/admin/__init__.py
+++ b/modoboa/extensions/admin/__init__.py
@@ -37,6 +37,9 @@ admin_events = [
     "ExtraAccountForm",
     "CheckExtraAccountForm",
     "FillAccountInstances",
+
+    "ExtraDomainImportHelp",
+    "ImportObject"
 ]
 
 
diff --git a/modoboa/extensions/admin/lib.py b/modoboa/extensions/admin/lib.py
index 896956c35..d84a998d4 100644
--- a/modoboa/extensions/admin/lib.py
+++ b/modoboa/extensions/admin/lib.py
@@ -4,6 +4,7 @@ from itertools import chain
 from django.db.models import Q
 from django.core.paginator import Paginator, EmptyPage, PageNotAnInteger
 from django.contrib.contenttypes.models import ContentType
+from django.utils.translation import ugettext as _
 from modoboa.core.models import User
 from modoboa.lib import parameters, events
 from modoboa.lib.exceptions import PermDeniedException
diff --git a/modoboa/extensions/admin/models/domain.py b/modoboa/extensions/admin/models/domain.py
index 7a0b909df..b0a2c474e 100644
--- a/modoboa/extensions/admin/models/domain.py
+++ b/modoboa/extensions/admin/models/domain.py
@@ -134,5 +134,7 @@ class Domain(AdminObject):
 
     def to_csv(self, csvwriter):
         csvwriter.writerow(["domain", self.name, self.quota, self.enabled])
+        for dalias in self.domainalias_set.all():
+            dalias.to_csv(csvwriter)
 
 reversion.register(Domain)
diff --git a/modoboa/extensions/admin/static/admin/js/admin.js b/modoboa/extensions/admin/static/admin/js/admin.js
index 313bc332e..57f27f9be 100644
--- a/modoboa/extensions/admin/static/admin/js/admin.js
+++ b/modoboa/extensions/admin/static/admin/js/admin.js
@@ -125,7 +125,7 @@ Admin.prototype = {
         $("#import_status").css("display", "none");
         if (status == "ok") {
             $("#modalbox").modal('hide');
-            this.reload_listing({respmsg: msg});
+            this.reload_listing(msg);
         } else {
             $("#import_result").addClass("alert alert-error");
             $("#import_result").html(msg);
diff --git a/modoboa/extensions/admin/tests/account.py b/modoboa/extensions/admin/tests/account.py
index 6f316eb17..547e170ab 100644
--- a/modoboa/extensions/admin/tests/account.py
+++ b/modoboa/extensions/admin/tests/account.py
@@ -70,7 +70,7 @@ class AccountTestCase(ModoTestCase):
     def test_set_nul_quota_as_domainadmin(self):
         self.clt.logout()
         self.assertTrue(self.clt.login(username="admin@test.com", password="toto"))
-        self._set_quota("user@test.com", 0, 424)
+        self._set_quota("user@test.com", 0, 400)
         self.clt.logout()
         self.assertTrue(self.clt.login(username="admin@test2.com", password="toto"))
         self._set_quota("user@test2.com", 0)
diff --git a/modoboa/extensions/admin/views/domain.py b/modoboa/extensions/admin/views/domain.py
index 38cd61f10..2dd635c65 100644
--- a/modoboa/extensions/admin/views/domain.py
+++ b/modoboa/extensions/admin/views/domain.py
@@ -40,6 +40,7 @@ def _domains(request):
         for flt in ['domfilter', 'searchquery']
         + events.raiseQueryEvent('ExtraDomainFilters')
     )
+    request.session['domains_filters'] = filters
     domainlist = get_domains(
         request.user, **filters
     )
diff --git a/modoboa/extensions/admin/views/export.py b/modoboa/extensions/admin/views/export.py
index 681a54bda..2c38e778f 100644
--- a/modoboa/extensions/admin/views/export.py
+++ b/modoboa/extensions/admin/views/export.py
@@ -8,8 +8,7 @@ from django.utils.translation import ugettext as _
 from django.contrib.auth.decorators import (
     login_required, permission_required, user_passes_test
 )
-from modoboa.extensions.admin.lib import get_identities
-from modoboa.extensions.admin.models import Domain
+from modoboa.extensions.admin.lib import get_domains, get_identities
 from modoboa.extensions.admin.forms import (
     ExportIdentitiesForm, ExportDomainsForm
 )
@@ -73,10 +72,9 @@ def export_domains(request):
         form.is_valid()
         fp = cStringIO.StringIO()
         csvwriter = csv.writer(fp, delimiter=form.cleaned_data["sepchar"])
-        for dom in Domain.objects.get_for_admin(request.user):
+        for dom in get_domains(request.user,
+                               **request.session['domains_filters']):
             dom.to_csv(csvwriter)
-            for da in dom.domainalias_set.all():
-                da.to_csv(csvwriter)
         content = fp.getvalue()
         fp.close()
         return _export(content, form.cleaned_data["filename"])
diff --git a/modoboa/extensions/admin/views/import.py b/modoboa/extensions/admin/views/import.py
index ea1cb857f..52497d051 100644
--- a/modoboa/extensions/admin/views/import.py
+++ b/modoboa/extensions/admin/views/import.py
@@ -6,6 +6,7 @@ from django.db import transaction, IntegrityError
 from django.contrib.auth.decorators import (
     login_required, permission_required, user_passes_test
 )
+from modoboa.lib import events
 from modoboa.lib.exceptions import ModoboaException, Conflict
 from modoboa.core.models import User
 from modoboa.extensions.admin.models import (
@@ -39,10 +40,11 @@ def import_domains(request):
 <ul>
   <li><em>domain; name; quota; enabled</em></li>
   <li><em>domainalias; name; targeted domain; enabled</em></li>
+  %s
 </ul>
 <p>The first element of each line is mandatory and must be equal to one of the previous values.</p>
 <p>You can use a different character as separator.</p>
-""")
+""" % ''.join([unicode(hlp) for hlp in events.raiseQueryEvent('ExtraDomainImportHelp')]))
 
     ctx = dict(
         title=_("Import domains"),
@@ -100,8 +102,8 @@ def importdata(request, formclass=ImportDataForm):
         try:
             reader = csv.reader(request.FILES['sourcefile'],
                                 delimiter=form.cleaned_data['sepchar'])
-        except csv.Error, e:
-            error = str(e)
+        except csv.Error as inst:
+            error = str(inst)
 
         if error is None:
             try:
@@ -112,13 +114,21 @@ def importdata(request, formclass=ImportDataForm):
                     try:
                         fct = globals()["import_%s" % row[0].strip()]
                     except KeyError:
-                        continue
+                        fct = events.raiseQueryEvent(
+                            'ImportObject', row[0].strip()
+                        )
+                        if not fct:
+                            continue
+                        fct = fct[0]
                     try:
                         fct(request.user, row, form.cleaned_data)
                     except IntegrityError, e:
                         if form.cleaned_data["continue_if_exists"]:
                             continue
-                        raise Conflict(_("Object already exists: %s" % row))
+                        raise Conflict(
+                            _("Object already exists: %s"
+                              % form.cleaned_data['sepchar'].join(row[:2]))
+                        )
                     cpt += 1
                 msg = _("%d objects imported successfully" % cpt)
                 return render(request, "admin/import_done.html", {
diff --git a/modoboa/extensions/postfix_relay_domains/__init__.py b/modoboa/extensions/postfix_relay_domains/__init__.py
index 151462236..647615e24 100644
--- a/modoboa/extensions/postfix_relay_domains/__init__.py
+++ b/modoboa/extensions/postfix_relay_domains/__init__.py
@@ -201,3 +201,22 @@ def extra_parameters(app, level):
             widget=forms.widgets.TextInput(attrs={"class": "span1"})
         )
     }
+
+
+@events.observe('ExtraDomainImportHelp')
+def extra_domain_import_help():
+    return [ugettext_lazy("""
+<li><em>relaydomain; name; target host; service; enabled; verify recipients</em></li>
+<li><em>relaydomainalias; name; target; enabled</em></li>
+""")]
+
+
+@events.observe('ImportObject')
+def get_import_func(objtype):
+    from .lib import import_relaydomain, import_relaydomainalias
+
+    if objtype == 'relaydomain':
+        return [import_relaydomain]
+    if objtype == 'relaydomainalias':
+        return [import_relaydomainalias]
+    return []
diff --git a/modoboa/extensions/postfix_relay_domains/lib.py b/modoboa/extensions/postfix_relay_domains/lib.py
new file mode 100644
index 000000000..a5c4764ec
--- /dev/null
+++ b/modoboa/extensions/postfix_relay_domains/lib.py
@@ -0,0 +1,14 @@
+from django.db import transaction
+from .models import RelayDomain, RelayDomainAlias
+
+
+@transaction.commit_on_success
+def import_relaydomain(user, row, formopts):
+    """Specific code for relay domains import"""
+    RelayDomain().from_csv(user, row)
+
+
+@transaction.commit_on_success
+def import_relaydomainalias(user, row, formopts):
+    """Specific code for relay domain aliases import"""
+    RelayDomainAlias().from_csv(user, row)
diff --git a/modoboa/extensions/postfix_relay_domains/models.py b/modoboa/extensions/postfix_relay_domains/models.py
index 2900b5c35..560dfb0c5 100644
--- a/modoboa/extensions/postfix_relay_domains/models.py
+++ b/modoboa/extensions/postfix_relay_domains/models.py
@@ -4,8 +4,8 @@ from django.db.models.manager import Manager
 from django.contrib.contenttypes import generic
 from django.utils.translation import ugettext as _, ugettext_lazy
 from modoboa.core.models import ObjectAccess
-from modoboa.lib import events, parameters
-from modoboa.lib.permissions import ungrant_access_to_object
+from modoboa.lib import parameters
+from modoboa.lib.exceptions import BadRequest, NotFound
 from modoboa.extensions.admin.models import AdminObject
 
 
@@ -52,6 +52,8 @@ class ServiceManager(Manager):
 
 
 class Service(models.Model):
+    """Postfix service.
+    """
     name = models.CharField(
         ugettext_lazy('name'), max_length=100, unique=True,
         help_text=ugettext_lazy('The service name')
@@ -106,6 +108,33 @@ class RelayDomain(AdminObject):
     def __str__(self):
         return self.name
 
+    def to_csv(self, csvwriter):
+        """Export this relay domain to CSV.
+
+        :param csvwriter:
+        """
+        csvwriter.writerow(
+            ["relaydomain", self.name, self.target_host, 
+             self.service.name, self.enabled, self.verify_recipients]
+        )
+        for rdalias in self.relaydomainalias_set.all():
+            rdalias.to_csv(csvwriter)
+
+    def from_csv(self, user, row):
+        """Import a relay domain from CSV.
+
+        :param user: user importing the relay domain
+        :param str row: relay domain definition
+        """
+        if len(row) != 6:
+            raise BadRequest(_("Invalid line"))
+        self.name = row[1].strip()
+        self.target_host = row[2].strip()
+        self.service, created = Service.objects.get_or_create(name=row[3].strip())
+        self.enabled = (row[4].strip() == 'True')
+        self.verify_recipients = (row[5].strip() == 'True')
+        self.save(creator=user)
+
 reversion.register(RelayDomain)
 
 
@@ -126,4 +155,29 @@ class RelayDomainAlias(AdminObject):
     def __str__(self):
         return self.name
 
+    def to_csv(self, csvwriter):
+        """Export this relay domain alias to CSV.
+
+        :param csvwriter:
+        """
+        csvwriter.writerow(
+            ['relaydomainalias', self.name, self.target.name, self.enabled]
+        )
+
+    def from_csv(self, user, row):
+        """Import a relay domain alias from CSV.
+
+        :param user: user importing the relay domain alias
+        :param str row: relay domain alias definition
+        """
+        if len(row) != 4:
+            raise BadRequest(_("Invalid line"))
+        self.name = row[1].strip()
+        try:
+            self.target = RelayDomain.objects.get(name=row[2].strip())
+        except RelayDomain.DoesNotExist:
+            raise NotFound(_("Relay domain %s does not exist" % row[2].strip()))
+        self.enabled = (row[3].strip() == 'True')
+        self.save(creator=user)
+
 reversion.register(RelayDomainAlias)