2.1 Please check the group permission in /var/spool/ml Check the group writable or not. For example, this is bad premission. >drwxrwxr-x 3 fml fml 512 Jun 7 23:39 . >drwxrwxr-x 7 bin mail 7168 Jun 13 16:07 .. >drwxrwxr-x 2 root fml 512 Jun 7 23:39 etc # chmod g-w /var/spool/ml[PREVIOUS CHAPTER] [NEXT CHAPTER]