maillog인데요..분석좀....급해요 ㅠㅠ

Jul 17 04:10:18 www sendmail[4238]: k6GJ22Tj004238: SYSERR(root): collect: Cannot write ./dfk6GJ22Tj004238 (bfcommit, uid=51, gid=51): Permission denied
Jul 17 04:10:18 www sendmail[4238]: k6GJ22Tj004238: from=root, size=458, class=0, nrcpts=1, relay=root@localhost
Jul 17 04:10:18 www sendmail[4238]: k6GJ22Tj004238:   0: fl=0x0, mode=10600: FIFO: dev=0/5, ino=146644832, nlink=1, u/gid=0/0, size=0
Jul 17 04:10:18 www sendmail[4238]: k6GJ22Tj004238:   1: fl=0x1, mode=10600: FIFO: dev=0/5, ino=3489, nlink=1, u/gid=0/0, size=0
Jul 17 04:10:18 www sendmail[4238]: k6GJ22Tj004238:   2: fl=0x1, mode=10600: FIFO: dev=0/5, ino=3490, nlink=1, u/gid=0/0, size=0
Jul 17 04:10:18 www sendmail[4238]: k6GJ22Tj004238:   3: fl=0x2, mode=140777: SOCK localhost->[[UNIX: /dev/log]]
Jul 17 04:10:18 www sendmail[4238]: k6GJ22Tj004238:   4: fl=0x1, mode=20666: CHR: dev=8/3, ino=67063, nlink=1, u/gid=0/0, size=0
Jul 17 04:10:18 www sendmail[4238]: k6GJ22Tj004238: SYSERR(root): queueup: cannot create queue temp file ./tfk6GJ22Tj004238, uid=51: Permission denied
Jul 17 05:43:45 www sendmail[5515]: dangerous permissions=40755 on queue directory /var/spool/clientmqueue/
Jul 17 05:43:45 www sendmail[5515]: k6GKhjb9005515: SYSERR(nobody): collect: Cannot write ./dfk6GKhjb9005515 (sm_io_flush||sm_io_error, uid=99, gid=51): Input/output error
Jul 17 05:43:45 www sendmail[5515]: k6GKhjb9005515: from=nobody, size=6212, class=0, nrcpts=1, relay=nobody@localhost
"/var/log/maillog" 314079L, 41886434C

17일자난이후로 메일인 안보내지네요 도대체 어떤에러지 모르겠서요 제발도와주세요