diff --git a/modoboa/admin/constants.py b/modoboa/admin/constants.py
index 45704b6d7..944da5e2f 100644
--- a/modoboa/admin/constants.py
+++ b/modoboa/admin/constants.py
@@ -80,3 +80,12 @@ DNSBL_PROVIDERS = [
     "zen.spamhaus.org",
     "zombie.dnsbl.sorbs.net",
 ]
+
+# Do not run tests for these domains.
+# https://en.wikipedia.org/wiki/Top-level_domain#Reserved_domains
+RESERVED_TLD = [
+    "example",
+    "invalid",
+    "localhost",
+    "test"
+]
diff --git a/modoboa/admin/management/commands/subcommands/_mx.py b/modoboa/admin/management/commands/subcommands/_mx.py
index 13c8bfb77..0528f3e12 100644
--- a/modoboa/admin/management/commands/subcommands/_mx.py
+++ b/modoboa/admin/management/commands/subcommands/_mx.py
@@ -257,4 +257,6 @@ class CheckMXRecords(BaseCommand):
         options.pop("domain")
 
         for domain in domains:
+            if domain.uses_a_reserved_tld:
+                continue
             self.check_domain(domain, **options)
diff --git a/modoboa/admin/models/domain.py b/modoboa/admin/models/domain.py
index 4094b73ef..290759d32 100644
--- a/modoboa/admin/models/domain.py
+++ b/modoboa/admin/models/domain.py
@@ -20,6 +20,7 @@ from modoboa.parameters import tools as param_tools
 
 from .. import signals
 from .base import AdminObject
+from .. import constants
 
 
 class DomainManager(Manager):
@@ -108,6 +109,12 @@ class Domain(AdminObject):
     def aliases(self):
         return self.domainalias_set
 
+    @property
+    def uses_a_reserved_tld(self):
+        """Does this domain use a reserved TLD."""
+        tld = self.name.split(".", 1)[-1]
+        return tld in constants.RESERVED_TLD
+
     @property
     def just_created(self):
         """Return true if the domain was created in the latest 24h."""
diff --git a/modoboa/admin/templates/admin/domains_table.html b/modoboa/admin/templates/admin/domains_table.html
index 0b3e24e9d..5fee00aae 100644
--- a/modoboa/admin/templates/admin/domains_table.html
+++ b/modoboa/admin/templates/admin/domains_table.html
@@ -8,7 +8,9 @@
   {% if enable_mx_checks or enable_dnsbl_checks %}
     <td name="dns">
       <small>
-        {% if domain.awaiting_checks %}
+        {% if domain.uses_a_reserved_tld %}
+          <span class="label label-mini label-info">{% trans "Disabled" context "checks" %}</span>
+        {% elif domain.awaiting_checks %}
           <span class="label label-mini label-info">{% trans "Awaiting checks" %}</span>
         {% else %}
           {% if enable_mx_checks %}
diff --git a/modoboa/admin/tests/test_mx.py b/modoboa/admin/tests/test_mx.py
index 8513bcb4a..6e811bf6b 100644
--- a/modoboa/admin/tests/test_mx.py
+++ b/modoboa/admin/tests/test_mx.py
@@ -72,6 +72,8 @@ class DNSBLTestCase(ModoTestCase):
         super(DNSBLTestCase, cls).setUpTestData()
         cls.domain = factories.DomainFactory(name="modoboa.org")
         factories.DomainFactory(name="pouet.com")  # should not exist
+        cls.domain2 = factories.DomainFactory(
+            name="test.localhost")  # Should not be checked
         models.DNSBLResult.objects.all().delete()
 
     @override_settings(DNSBL_PROVIDERS=["zen.spamhaus.org"])
@@ -84,6 +86,8 @@ class DNSBLTestCase(ModoTestCase):
         response = self.client.get(
             reverse("admin:dnsbl_domain_detail", args=[self.domain.pk]))
         self.assertEqual(response.status_code, 200)
+        self.assertFalse(self.domain.uses_a_reserved_tld)
+        self.assertTrue(self.domain2.uses_a_reserved_tld)
 
     @override_settings(DNSBL_PROVIDERS=["zen.spamhaus.org"])
     def test_management_command_no_dnsbl(self):