diff -up sudo-1.8.6p3/plugins/sudoers/sssd.c.sssd-noise sudo-1.8.6p3/plugins/sudoers/sssd.c
--- sudo-1.8.6p3/plugins/sudoers/sssd.c.sssd-noise	2012-11-29 13:23:43.332760956 +0100
+++ sudo-1.8.6p3/plugins/sudoers/sssd.c	2012-11-29 13:23:57.548816054 +0100
@@ -350,7 +350,7 @@ static int sudo_sss_setdefs(struct sudo_
 
     if (sss_error == ENOENT) {
 	sudo_debug_printf(SUDO_DEBUG_INFO, "The user was not found in SSSD.");
-	debug_return_int(-1);
+	debug_return_int(0);
     } else if(sss_error != 0) {
 	sudo_debug_printf(SUDO_DEBUG_INFO, "sss_error=%u\n", sss_error);
 	debug_return_int(-1);