User can not login to some services just on HPUX.
If the account having the problem has special characters in their password, this will cause login to fail using some services.
Re-set the users password so it does not contain any special characters. This is a limitation with HPUX. For more information please see the MAN page for 'passwd' on your HP-UX machine.
Avoid password characters which have special meaning to the tty
driver, such as # (erase) and @ (kill). You may not be able to login
with these characters.