diff --git a/bin/prepare_minion.py b/bin/prepare_minion.py
index 7bddba1..a1f15bd 100755
--- a/bin/prepare_minion.py
+++ b/bin/prepare_minion.py
@@ -28,6 +28,7 @@ file_roots:
     - /srv/salt
     - /srv/formulas/salt-formula
     - /srv/formulas/users-formula
+    - /srv/formulas/postfix-formula
 ''')
 
 os.symlink(mypwd + '/salt', '/srv/salt')
diff --git a/pillar/common.sls b/pillar/common/init.sls
similarity index 69%
rename from pillar/common.sls
rename to pillar/common/init.sls
index d423f73..7665aa6 100644
--- a/pillar/common.sls
+++ b/pillar/common/init.sls
@@ -1,12 +1,8 @@
 include:
   - role.salt.common
   - role.salt.minion
+  - common.{{ grains['os'] | lower }}
 
 managed_header_pound: |
   ### This file is managed via https://git.com.de/LibertaCasa/salt
   ### Manual changes will be overwritten
-
-{%- if grains['os'] == 'SUSE' %}
-zypper:
-  refreshdb_force: False
-{%- endif %}
diff --git a/pillar/common/postfix.sls b/pillar/common/postfix.sls
new file mode 100644
index 0000000..15c3d07
--- /dev/null
+++ b/pillar/common/postfix.sls
@@ -0,0 +1,26 @@
+postfix:
+  master_config:
+    services:
+      smtp:
+        enable: False
+  config:
+    # to-do: set via site config
+    relayhost: zz0.email
+    myhostname: {{ grains['fqdn'] }}
+    inet_interfaces: loopback-only
+    # to-do: support relay via IPv6
+    inet_protocols: ipv4
+    alias_maps: lmdb:/etc/aliases
+    smtpd_use_tls: 'no'
+    smtp_use_tls: 'yes'
+    smtp_tls_security_level: encrypt
+    smtp_tls_wrappermode: 'yes'
+
+  aliases:
+    use_file: false
+    present:
+      admins: 'georg, pratyush'
+      georg: georg@lysergic.dev
+      pratyush: pratyush@lysergic.dev
+      root: 'system, \root'
+      system: system@lysergic.dev
diff --git a/pillar/common/suse.sls b/pillar/common/suse.sls
new file mode 100644
index 0000000..f3456ed
--- /dev/null
+++ b/pillar/common/suse.sls
@@ -0,0 +1,6 @@
+include:
+  - .postfix
+
+zypper:
+  refreshdb_force: False
+
diff --git a/pillar/role/salt/master.sls b/pillar/role/salt/master.sls
index b306637..cafd05d 100644
--- a/pillar/role/salt/master.sls
+++ b/pillar/role/salt/master.sls
@@ -1,4 +1,4 @@
-{%- set formulas = ['salt', 'users'] -%}
+{%- set formulas = ['salt', 'users', 'postfix'] -%}
 
 salt:
   interface: ${'secret_salt:master:interface'}
diff --git a/salt/common/postfix.sls b/salt/common/postfix.sls
new file mode 100644
index 0000000..d5b51d4
--- /dev/null
+++ b/salt/common/postfix.sls
@@ -0,0 +1,3 @@
+include:
+  - postfix
+  - postfix.config
diff --git a/salt/common/suse.sls b/salt/common/suse.sls
index e655353..d76da87 100644
--- a/salt/common/suse.sls
+++ b/salt/common/suse.sls
@@ -3,6 +3,7 @@ include:
   - profile.zypp
   - profile.node_exporter
   - users
+  - .postfix
 
 {#- to-do: move this to some formula or macro -#}
 {%- set osfullname = grains['osfullname'] -%}