diff --git a/exim/defaults.yaml b/exim/defaults.yaml
index f823839..4d20b9d 100644
--- a/exim/defaults.yaml
+++ b/exim/defaults.yaml
@@ -7,18 +7,18 @@ exim:
   virtual_aliases: {}
   files: {}
   config:
-    configtype: 'satellite'
-    other_hostnames: ''
-    local_interfaces: ''
-    relay_domains: ''
-    relay_nets: ''
-    use_split_config: 'true'
-    hide_mailname: 'true'
-    ue4c_keepcomments: 'true'
-    localdelivery: 'mail_spool'
-    minimaldns: 'false'
+    configtype: satellite
+    other_hostnames: []
+    local_interfaces: []
+    relay_domains: []
+    relay_nets: []
+    use_split_config: true
+    hide_mailname: true
+    ue4c_keepcomments: true
+    localdelivery: mail_spool
+    minimaldns: false
     readhost: ''
-    smarthost: ''
+    smarthost: []
     cfilemode: '644'
   sub_dirs:
     - main
diff --git a/exim/files/default/update-exim4.conf.conf b/exim/files/default/update-exim4.conf.conf
index 9cdb517..cdabadd 100644
--- a/exim/files/default/update-exim4.conf.conf
+++ b/exim/files/default/update-exim4.conf.conf
@@ -3,16 +3,18 @@
 # Your changes will be overwritten.
 ########################################################################
 
+{%- from "exim/macros.jinja" import join_if_list %}
+
 dc_eximconfig_configtype='{{ exim.configtype }}'
-dc_other_hostnames='{{ exim.other_hostnames }}'
-dc_local_interfaces='{{ exim.local_interfaces }}'
-dc_relay_domains='{{ exim.relay_domains }}'
-dc_relay_nets='{{ exim.relay_nets }}'
-dc_use_split_config='{{ exim.use_split_config }}'
-dc_hide_mailname='{{ exim.hide_mailname }}'
-ue4c_keepcomments='{{ exim.ue4c_keepcomments }}'
+dc_other_hostnames='{{ join_if_list(exim.other_hostnames) }}'
+dc_local_interfaces='{{ join_if_list(exim.local_interfaces) }}'
+dc_relay_domains='{{ join_if_list(exim.relay_domains) }}'
+dc_relay_nets='{{ join_if_list(exim.relay_nets) }}'
+dc_use_split_config='{{ exim.use_split_config | lower }}'
+dc_hide_mailname='{{ exim.hide_mailname | lower }}'
+ue4c_keepcomments='{{ exim.ue4c_keepcomments | lower }}'
 dc_localdelivery='{{ exim.localdelivery }}'
-dc_minimaldns='{{ exim.minimaldns }}'
+dc_minimaldns='{{ exim.minimaldns | lower }}'
 dc_readhost='{{ exim.readhost }}'
-dc_smarthost='{{ exim.smarthost }}'
+dc_smarthost='{{ join_if_list(exim.smarthost) }}'
 CFILEMODE='{{ exim.cfilemode }}'
diff --git a/exim/macros.jinja b/exim/macros.jinja
new file mode 100644
index 0000000..a7459da
--- /dev/null
+++ b/exim/macros.jinja
@@ -0,0 +1,12 @@
+# -*- coding: utf-8 -*-
+# vim: ft=jinja
+#
+# Collection of common macros
+
+{%- macro join_if_list(value, delimiter=' ; ') -%}
+  {%- if value is list -%}
+    {{ value | join(delimiter) }}
+  {%- else -%}
+    {{ value }}
+  {%- endif -%}
+{%- endmacro -%}
diff --git a/test/integration/default/controls/config_spec.rb b/test/integration/default/controls/config_spec.rb
index 84fa60c..e43df3e 100644
--- a/test/integration/default/controls/config_spec.rb
+++ b/test/integration/default/controls/config_spec.rb
@@ -6,7 +6,10 @@
     its('content') { should include "dc_eximconfig_configtype='satellite'" }
 
     # Custom config
+    its('content') { should include "dc_other_hostnames='foo.bar.baz ; bar.baz.foo'" }
+    its('content') { should include "dc_local_interfaces='127.0.0.1'" }
     its('content') { should include "dc_hide_mailname='false'" }
+    its('content') { should include "dc_use_split_config='false'" }
   end
 
   describe file('/etc/mailname') do
diff --git a/test/integration/default/controls/service_spec.rb b/test/integration/default/controls/service_spec.rb
index 0b327e9..a92bfdc 100644
--- a/test/integration/default/controls/service_spec.rb
+++ b/test/integration/default/controls/service_spec.rb
@@ -10,7 +10,6 @@
     it { should be_listening }
     its('processes') { should include 'exim4' }
     its('protocols') { should include 'tcp' }
-    its('addresses') { should include '0.0.0.0' }
-    its('addresses') { should include '::' }
+    its('addresses') { should include '127.0.0.1' }
   end
 end
diff --git a/test/salt/pillar/exim.sls b/test/salt/pillar/exim.sls
index d8af6b3..c42ebb3 100644
--- a/test/salt/pillar/exim.sls
+++ b/test/salt/pillar/exim.sls
@@ -3,8 +3,13 @@
 ---
 exim:
   config:
-    configtype: 'satellite'
+    configtype: satellite
     hide_mailname: 'false'
+    use_split_config: false
+    other_hostnames:
+      - foo.bar.baz
+      - bar.baz.foo
+    local_interfaces: 127.0.0.1
   mailname: foo.bar.baz
   aliases:
     root: root@bar.baz