--- 10-master.conf.orig	2012-12-17 00:35:40.000000000 +0100
+++ 10-master.conf	2016-10-24 15:36:32.000000000 +0200
@@ -49,6 +49,11 @@
   unix_listener lmtp {
     #mode = 0666
   }
+  unix_listener /var/spool/postfix/private/dovecot-lmtp {
+    group = postfix
+    mode = 0600
+    user = postfix
+  }
 
   # Create inet listener only if you can't use the above UNIX socket
   #inet_listener lmtp {
@@ -87,15 +92,23 @@
   # something else than 0666 and Dovecot lets the kernel enforce the
   # permissions (e.g. 0777 allows everyone full permissions).
   unix_listener auth-userdb {
-    #mode = 0666
-    #user = 
-    #group = 
+    mode = 0660
+    user = dovecot
+    group = mail
   }
 
   # Postfix smtp-auth
-  #unix_listener /var/spool/postfix/private/auth {
-  #  mode = 0666
-  #}
+  unix_listener /var/spool/postfix/private/auth {
+    mode = 0600
+    user = postfix
+    group = postfix
+  }
+
+#  unix_listener /var/run/ejabberd/auth {
+#    mode = 0660
+#    user = ejabberd
+#    group = ejabberd
+#  }
 
   # Auth process is run as this user.
   #user = $default_internal_user