--- a/README.postfix	Mon Sep 20 02:52:22 2010 +1000
+++ b/README.postfix	Mon Sep 27 10:59:35 2010 +1000
@@ -62,12 +62,15 @@
             /^(mlmmj-test.*)@example\.com$/          ${1}
             /^(another-list.*)@sample\.com$/         ${1}
 
-    
     One line needs to be in the virtual map for each list the 'mlmmj' id
     is to handle.  The regex formula is:
 
         /^(list-name.*)@(domain\.com)$/              ${1}
 
+    If you want to host multiple domains in a hierarchical structure,
+    you can alternatively use:
+
+        /^(list-name.*)@(domain\.com)$/        domain--${1}
    
     Next we make sure that postfix can invoke the mlmmj executables as
     the 'mlmmj' user.  This is where the transport map comes in.  So we
@@ -89,6 +92,10 @@
     Which in this case is the mailing list name.  'nexthop' is special
     variable for transports.
 
+    For the hierarchical multi-domain solution, use this variant:
+
+        /^(domain--list-name).*$/              mlmmj:domain/list-name
+
     Now we setup the 'mlmmj' transport.  The 'mlmmj' in mlmmj:$1 above
     indicates a transport listed in the postfix master.cf file.  We are
     just going to create a transport called 'mlmmj' but it is nothing
@@ -117,7 +124,10 @@
 
     $nexthop gets set to what was on the right had side of the ':' in
     the transport file.  The way we have that configured is that
-    $nexthop will get set to the name of the mailing list.
+    $nexthop will get set to the name of the mailing list (or domain
+    and name).  Your list directories, then, should be at
+    /var/spool/mlmmj/list-name as usual, or for the hierarchical
+    multi-domain version, in /var/spool/mlmmj/domain/list-name.
 
     Restart postfix and enjoy your new lists.