Index: openacs-4/packages/forums/www/message-email.tcl
===================================================================
RCS file: /usr/local/cvsroot/openacs-4/packages/forums/www/message-email.tcl,v
diff -u -r1.16 -r1.17
--- openacs-4/packages/forums/www/message-email.tcl	20 Sep 2008 12:10:28 -0000	1.16
+++ openacs-4/packages/forums/www/message-email.tcl	27 Oct 2014 16:41:38 -0000	1.17
@@ -7,9 +7,12 @@
     @cvs-id $Id$
 
 } {
-    message_id:integer,notnull
+    message_id:naturalnum,notnull
 }
 
+# require login to avoid abuse from spammers
+auth::require_login
+
 forum::security::require_read_message -message_id $message_id
 
 # Get the message information