diff --git a/unipoly-mlmmj-sync.rb b/unipoly-mlmmj-sync.rb
index 9df06a5..f4ed83f 100755
--- a/unipoly-mlmmj-sync.rb
+++ b/unipoly-mlmmj-sync.rb
@@ -34,10 +34,6 @@ def connect_ldap(conf)
   end
 end
 
-def ldap_connect(ldap)
-    ldap.bind
-end
-
 def main
   conf = read_configuration(@configuration_file)
   conn = connect_ldap(conf)
@@ -49,14 +45,27 @@ def main
     match = conn.search(:base => basetree, :filter => filter)
     unless (match.size < 1)
       entry = match.first
-      puts "Found: #{entry.dn} with #{entry.uniquemember.size} entries"
+      members = entry.uniquemember.map { |dn| /mail=([^,]+),/.match(dn).values_at(1).first }
+      puts "Found: #{entry.dn} with #{members.size} entries"
 
       mlmmj_list_binary = conf["mlmmj"]["list_binary"]
       mlmmj_basepath = conf["mlmmj"]["basepath"]
       if (File.executable?(mlmmj_list_binary))
-        subscribers = %x(#{mlmmj_list_binary} -L #{mlmmj_basepath}/#{cn}@#{domain} -s)
-        unless ($?.exitstatus == 0)
-          puts "Got #{subscribers.split("\n").size} subscribers from mlmmj".
+        raw = %x(#{mlmmj_list_binary} -L #{mlmmj_basepath}/#{cn}@#{domain} -s)
+        if ($?.exitstatus == 0)
+          subscribers = raw.split("\n")
+          puts "Got #{subscribers.size} subscribers from mlmmj for #{cn}@#{domain}"
+
+          members.each do |member|
+            if (subscribers.include?(member))
+               subscribers.delete(member)
+            else
+               puts "#{member} is to be added to #{cn}"
+            end
+          end
+          print "There are #{subscribers.size} addesses to remove:"
+          subscribers.each { |s|  print " " + s}
+          print "\n"
         else
           puts "Failed to get the subscribers of #{cn}@#{domain}"
         end