diff --git a/Metadata/groups.xml b/Metadata/groups.xml
index 47524e5..d2deed7 100644
--- a/Metadata/groups.xml
+++ b/Metadata/groups.xml
@@ -111,8 +111,10 @@
 	 comment="groupe minimal pour un serveur du Crans"
 	 toolset="debian">
     <Group name="locale"/>
-    <Group name="ssh"/>
-    <Group name="sudo"/>
+    <!-- TODO: a terminer
+	<Group name="ssh"/>
+	<Group name="sudo"/>
+	-->
     <Group name="home"/>
     <Group name="mail"/>
   </Group>
diff --git a/Rules/rules.xml b/Rules/rules.xml
new file mode 100644
index 0000000..00939e9
--- /dev/null
+++ b/Rules/rules.xml
@@ -0,0 +1,28 @@
+<Rules priority="0">
+  <Package name="locales" version="2.3.6.ds1-13etch2"/>
+  <Action name="generate-locales" timing="post" when="modified" status="check"
+	  command="/usr/sbin/update-locale"/>
+
+  <Package name="postfix" version="2.3.8-2"/>
+  <Package name="postfix" version="2.3.8-2"/>
+  <Package name="postfix-ldap" version="2.3.8-2"/>
+  <Service name="postfix" status="on"/>
+  <Action name="generate-locales"
+	  timing="post" when="modified" status="check"
+	  command="/usr/sbin/update-locale"/>
+  <Action name="update-postfix-aliases"
+	  timing="post" when="modified" status="check"
+	  command="/usr/sbin/postdmap aliases"/>
+  <Action name="update-postfix-canonical"
+	  timing="post" when="modified" status="check"
+	  command="/usr/sbin/postdmap canonical"/>
+  <Action name="update-postfix-mime_header_checks"
+	  timing="post" when="modified" status="check"
+	  command="/usr/sbin/postdmap mime_header_checks"/>
+  <Action name="update-postfix-transport"
+	  timing="post" when="modified" status="check"
+	  command="/usr/sbin/postdmap transport"/>
+  <Action name="update-postfix-virtual"
+	  timing="post" when="modified" status="check"
+	  command="/usr/sbin/postdmap virtual"/>
+</Rules>