--- 50-user.orig	2012-06-16 19:10:20.000000000 +0200
+++ 50-user	2013-01-26 19:41:07.000000000 +0100
@@ -8,6 +8,9 @@
 # the directives you can use in this file
 #
 
+my $config_file_addon="/etc/local-COMMON/amavis/amavisd.conf.addon";
+-f $config_file_addon or die "Cannot find config file $config_file_addon";
+do $config_file_addon or die "Error in config file $config_file_addon: $@";
 
 #------------ Do not modify anything below this line -------------
 1;  # ensure a defined return