diff --git a/roles/opensmtpd/handlers/main.yml b/roles/opensmtpd/handlers/main.yml
index f55a5d7..50a5ec0 100644
--- a/roles/opensmtpd/handlers/main.yml
+++ b/roles/opensmtpd/handlers/main.yml
@@ -1,5 +1,5 @@
 ---
 - name: restart opensmtpd
   service:
-    name: opensmtpd
+    name: "{{ opensmtpd_service }}"
     state: restarted
diff --git a/roles/opensmtpd/tasks/main.yml b/roles/opensmtpd/tasks/main.yml
index 156e851..d2928ad 100644
--- a/roles/opensmtpd/tasks/main.yml
+++ b/roles/opensmtpd/tasks/main.yml
@@ -1,34 +1,41 @@
 ---
+- name: include OS-specific variables
+  include_vars: "{{ item }}"
+  with_first_found:
+    - "{{ ansible_os_family }}.yml"
+    - default.yml
 
-- name: install opensmtpd
-  package:
-    name: opensmtpd
-    state: installed
-- name: set default mta to opensmtpd
-  alternatives:
-    name: mta
-    path: /usr/sbin/sendmail.opensmtpd
+- block:
+    - name: install opensmtpd
+      package:
+        name: opensmtpd
+        state: installed
+    - name: set default mta to opensmtpd
+      alternatives:
+        name: mta
+        path: /usr/sbin/sendmail.opensmtpd
+  when: opensmtpd_package is defined
 
 - name: create smtpd.conf from template
   template:
     src: smtpd.conf.j2
-    dest: /etc/opensmtpd/smtpd.conf
+    dest: "{{ opensmtpd_config }}"
     mode: 0644
     owner: root
-    group: root
+    group: "{{ ansible_wheel }}"
   notify: restart opensmtpd
 
 - name: force server name to domain name
   copy:
     content: "{{ mail_domain }}\n"
-    dest: /etc/opensmtpd/mailname
+    dest: "{{ opensmtpd_confdir }}/mailname"
     mode: 0644
     owner: root
-    group: root
+    group: "{{ ansible_wheel }}"
   notify: restart opensmtpd
 
 - name: enable opensmtpd
   service:
-    name: opensmtpd
+    name: "{{ opensmtpd_service }}"
     state: started
     enabled: true
diff --git a/roles/opensmtpd/templates/smtpd.conf.j2 b/roles/opensmtpd/templates/smtpd.conf.j2
index acb0e89..4cc66d1 100644
--- a/roles/opensmtpd/templates/smtpd.conf.j2
+++ b/roles/opensmtpd/templates/smtpd.conf.j2
@@ -1,6 +1,17 @@
+{% if ansible_lo0 %}
+listen on lo0
+{% else %}
 listen on lo
+{% endif %}
 
-table aliases file:/etc/aliases
+table aliases file:{{ opensmtpd_aliases }}
 
 # use obsolete smtps as it goes through firewalls better than 25
-accept from local for any relay via smtps://{{ mail_server }} as "@{{ mail_domain }}"
+{% if ansible_os_family in ["OpenBSD"] %}
+action "local" mbox alias <aliases>
+action "relay" relay host smtps://{{ mail_server }} mail-from "@{{ mail_domain }}"
+match for local action "local" 
+match for any action "relay"
+{% else %}
+accept from local for any relay via smtps://mail.foo.sh as "@foo.sh"
+{% endif %}
diff --git a/roles/opensmtpd/vars/OpenBSD.yml b/roles/opensmtpd/vars/OpenBSD.yml
new file mode 100644
index 0000000..1fd909f
--- /dev/null
+++ b/roles/opensmtpd/vars/OpenBSD.yml
@@ -0,0 +1,5 @@
+---
+opensmtpd_confdir: /etc/mail
+opensmtpd_config: "{{ opensmtpd_confdir }}/smtpd.conf"
+opensmtpd_service: smtpd
+opensmtpd_aliases: /etc/mail/aliases
diff --git a/roles/opensmtpd/vars/default.yml b/roles/opensmtpd/vars/default.yml
new file mode 100644
index 0000000..829e328
--- /dev/null
+++ b/roles/opensmtpd/vars/default.yml
@@ -0,0 +1,6 @@
+---
+opensmtpd_confdir: /etc/opensmtpd
+opensmtpd_config: "{{ opensmtpd_confdir }}/opensmtpd.conf"
+opensmtpd_package: opensmtpd
+opensmtpd_service: opensmtpd
+opensmtpd_aliases: /etc/aliases