diff --git a/defaults/main.yml b/defaults/main.yml
index 995d537..da930c1 100644
--- a/defaults/main.yml
+++ b/defaults/main.yml
@@ -2,3 +2,12 @@
 # defaults file for dotqmail
 dotqmail_prefix : ".qmail-"
 
+# Set root dotqmail file to maildir by default
+dotqmail_rootfile: ["./Maildir/"]
+
+# Those must be always present according to rfc2142
+# @see https://tools.ietf.org/html/rfc2142
+dotqmail_default_files:
+  "abuse": ["{{ansible_env.USER}}"]
+  "hostmaster": ["{{ansible_env.USER}}"]
+  "postmaster": ["{{ansible_env.USER}}"]
diff --git a/tasks/main.yml b/tasks/main.yml
index 4afa0b3..9206038 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -39,6 +39,8 @@
 
 # For the other files the we get a key-value pair with the dotqmail extention
 # as key and the list of lines as value while looping over dotqmail_files
+# (which is a combination of dotqmail_config_files from inventory over
+# dotqmail_default_files from role defaults)
 - name: generate/update other dotqmail-files
   template:
     src: templates/dotqmail.j2
diff --git a/vars/main.yml b/vars/main.yml
index 33f7103..f846b81 100644
--- a/vars/main.yml
+++ b/vars/main.yml
@@ -1,2 +1,9 @@
 ---
 # vars file for dotqmail
+
+# combine dotqmail_default_files from role's default with configuration
+# Will make sure that every dotqmail file from default config will be present
+# the content hence can be adjusted by defining the extention in e.g. inventory
+# which will be prefered
+# This is done to be conform with rfc2142
+dotqmail_files: "{{dotqmail_default_files|combine(dotqmail_config_files)}}"