diff -up yp-tools-2.12/src/yppasswd.c.adjunct yp-tools-2.12/src/yppasswd.c

--- yp-tools-2.12/src/yppasswd.c.adjunct	2012-04-23 13:17:47.000988833 +0200

+++ yp-tools-2.12/src/yppasswd.c	2012-04-23 13:18:01.209802938 +0200

@@ -774,6 +775,7 @@

       /* We can't check the password with shadow passwords enabled. We

        * leave the checking to yppasswdd */

       if (uid != 0 && strcmp (pwd->pw_passwd, "x") != 0 &&

+	  0 != strncmp (pwd->pw_passwd, "##", 2) && /* don't check passwords using passwd.adjunct feature */

 	  strcmp (pwd->pw_passwd, hashpass ) != 0)

 	{

 	  int passwdlen = get_passwd_len (pwd->pw_passwd);