diff -r 57611584e27d -r e165414a454c plugins/mod_saslauth.lua
--- a/plugins/mod_saslauth.lua	Thu Dec 17 21:50:02 2009 +0000
+++ b/plugins/mod_saslauth.lua	Mon Dec 21 22:00:49 2009 +0000
@@ -115,6 +115,9 @@
 		if not session.sasl_handler then
 			return session.send(build_reply("failure", "invalid-mechanism"));
 		end
+		if secure_auth_only and not session.secure then
+			return session.send(build_reply("failure", "encryption-required"));
+		end
 	elseif not session.sasl_handler then
 		return; -- FIXME ignoring out of order stanzas because ejabberd does
 	end