--- sshutout-1.0.5/sshutout.c~	2009-10-08 01:39:32 +0400
+++ sshutout-1.0.5/sshutout.c	2009-10-08 01:44:19 +0400
@@ -992,7 +992,8 @@
                         /* Check for login failure or illegal/invalid user */
                         if (strncmp(msg, "Failed", 6) &&
                             !strstr(msg, "error: PAM:") &&
-			    (!illegal_user || (strncmp(msg, "Illegal user", 12) && strncmp(msg, "Invalid user", 12)))) { 
+			    (!illegal_user || (strncmp(msg, "llegal user", 12) && strncmp(msg, "Invalid user", 12) 
+					       && strncmp(msg, "UNKNOWN USER", 12)))) { 
 				attempt = 0;
 				continue;
 			}