diff --git a/src/postorius/management/commands/mmclient.py b/src/postorius/management/commands/mmclient.py
index 1e5ec07..404901a 100644
--- a/src/postorius/management/commands/mmclient.py
+++ b/src/postorius/management/commands/mmclient.py
@@ -19,6 +19,7 @@
 from django.conf import settings
 from django.core.management.base import BaseCommand, CommandError
 from mailmanclient import Client, MailmanConnectionError
+from postorius import utils
 from urllib2 import HTTPError
 
 class Command(BaseCommand):
@@ -44,7 +45,6 @@
             shell = code.InteractiveConsole(globals())
             console_fn = shell.interact
         # connect to mailmanclient
-        client = Client('%s/3.0' % settings.REST_SERVER,
-                        settings.API_USER, settings.API_PASS)
+        client = utils.get_client()
         # run the interpreter
         console_fn()
diff --git a/src/postorius/models.py b/src/postorius/models.py
index 25e18af..2f002cb 100644
--- a/src/postorius/models.py
+++ b/src/postorius/models.py
@@ -25,6 +25,7 @@
 from django.dispatch import receiver
 from django.http import Http404
 from mailmanclient import Client, MailmanConnectionError
+from postorius import utils
 from urllib2 import HTTPError
 
 
@@ -48,8 +49,7 @@
     """
 
     def __init__(self, resource_name, resource_name_plural, cls_name=None):
-        self.client = Client('%s/3.0' % settings.REST_SERVER,
-                             settings.API_USER, settings.API_PASS)
+        self.client = utils.get_client()
         self.resource_name = resource_name
         self.resource_name_plural = resource_name_plural
 
diff --git a/src/postorius/utils.py b/src/postorius/utils.py
index 84d81a0..587f6c4 100644
--- a/src/postorius/utils.py
+++ b/src/postorius/utils.py
@@ -33,9 +33,9 @@
 
 
 def get_client():
-    return Client('{0}/3.0'.format(settings.REST_SERVER),
-                  settings.API_USER,
-                  settings.API_PASS)
+    return Client('{0}/3.0'.format(settings.MAILMAN_API_URL),
+                  settings.MAILMAN_USER,
+                  settings.MAILMAN_PASS)
 
 
 def render_api_error(request):
diff --git a/src/postorius/views/api.py b/src/postorius/views/api.py
index 093b937..c51b9c1 100644
--- a/src/postorius/views/api.py
+++ b/src/postorius/views/api.py
@@ -54,8 +54,7 @@
 @basic_auth_login
 @loggedin_or_403
 def api_list_index(request):
-    client = Client('%s/3.0' % settings.REST_SERVER,
-                    settings.API_USER, settings.API_PASS)
+    client = utils.get_client()
     res, content = client._connection.call('lists')
     return HttpResponse(json.dumps(content['entries']),
                         content_type="application/json")
diff --git a/src/postorius/views/generic.py b/src/postorius/views/generic.py
index 7095dac..4feda1d 100644
--- a/src/postorius/views/generic.py
+++ b/src/postorius/views/generic.py
@@ -33,8 +33,7 @@
     
     def client(self):
         if getattr(self._client, '_client', None) is None:
-            self._client = Client('%s/3.0' % settings.REST_SERVER,
-                                  settings.API_USER, settings.API_PASS)
+            self._client = utils.get_client()
         return self._client
 
 
@@ -114,7 +113,7 @@
         memberships = []
         if (self.mm_user):
             for a in self.mm_user.addresses:
-                members = self._client._connection.call('members/find',
+                members = self.client()._connection.call('members/find',
                                                         {'subscriber': a})
                 try:
                     for m in members[1]['entries']:
diff --git a/src/postorius/views/settings.py b/src/postorius/views/settings.py
index 333191d..305a739 100644
--- a/src/postorius/views/settings.py
+++ b/src/postorius/views/settings.py
@@ -95,8 +95,7 @@
     """
     if request.method == 'POST':
         try:
-            client = Client(settings.REST_SERVER + '/3.0', settings.API_USER,
-                            settings.API_PASS)
+            client = utils.get_client()
             client.delete_domain(domain)
             messages.success(request,
                              _('The domain %s has been deleted.' % domain))