diff --git a/test/integration/default/controls/postfix_spec.rb b/test/integration/default/controls/postfix_spec.rb
index 1e45a18..a2542d2 100644
--- a/test/integration/default/controls/postfix_spec.rb
+++ b/test/integration/default/controls/postfix_spec.rb
@@ -38,7 +38,7 @@ control 'Postfix config' do
     its('mynetworks') { should cmp '127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128' }
     its('mailbox_size_limit') { should cmp '0' }
     its('recipient_delimiter') { should cmp '+' }
-    its('inet_interfaces') { should cmp 'all' }
+    its('inet_interfaces') { should cmp '127.0.0.1' }
     its('inet_protocols') { should cmp 'all' }
     its('message_size_limit') { should cmp '41943040' }
     its('smtpd_recipient_restrictions') do
diff --git a/test/salt/pillar/default.sls b/test/salt/pillar/default.sls
index 8fd852e..e793b5e 100644
--- a/test/salt/pillar/default.sls
+++ b/test/salt/pillar/default.sls
@@ -45,7 +45,8 @@ postfix:
     mynetworks: 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
     mailbox_size_limit: 0
     recipient_delimiter: +
-    inet_interfaces: all
+    # using all has problems in centos with ipv6
+    inet_interfaces: 127.0.0.1
     inet_protocols: all
 
     # Alias
diff --git a/test/salt/pillar/postgrey.sls b/test/salt/pillar/postgrey.sls
index f127c79..602be0e 100644
--- a/test/salt/pillar/postgrey.sls
+++ b/test/salt/pillar/postgrey.sls
@@ -50,7 +50,8 @@ postfix:
     mynetworks: 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
     mailbox_size_limit: 0
     recipient_delimiter: +
-    inet_interfaces: all
+    # using all has problems in centos with ipv6
+    inet_interfaces: 127.0.0.1
     inet_protocols: all
 
     # Alias