Forwarding DNS Server can not resolved alias records(CNAME)?

[ShanyiWan]

Forwarding DNS Server can not resolved alias records(CNAME)?

here:

211.99.204.77   Forwarding DNS 

Master Zone (another ip address)

[root at flyinweb data]# vi 01cool.com.dom    

$TTL 7200       ; 2 hours
@    IN  SOA  ns1.mymaster.com. root.mymaster.com. (
                5; serial
                10800; refresh
                3600; retry
                604800; expire
                86400; mininum
                )
        NS      ns1.mymaster.com.
        NS      ns2.mymaster.com.
        MX      10 mail.01cool.com.
@       A       218.246.85.101
mail    A       218.246.85.199
www     CNAME   218.246.85.101.
www1    CNAME   517sou.net.

A Record is correct,but CNAME Record is incorrect!

[root at flyinweb data]# dig @211.99.204.77 01cool.com    

; <<>> DiG 9.7.0-P2 <<>> @211.99.204.77 01cool.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 17293
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 1

;; QUESTION SECTION:
;01cool.com.                    IN      A

;; ANSWER SECTION:
01cool.com.             7200    IN      A       218.246.85.101

;; AUTHORITY SECTION:
01cool.com.             7200    IN      NS      ns1.cnolnic.com.
01cool.com.             7200    IN      NS      ns2.cnolnic.com.

;; ADDITIONAL SECTION:
ns2.cnolnic.com.        6523    IN      A       59.151.23.112

;; Query time: 108 msec
;; SERVER: 211.99.204.77#53(211.99.204.77)
;; WHEN: Fri Jun 25 19:00:35 2010
;; MSG SIZE  rcvd: 104

[root at flyinweb ~]# dig @211.99.204.77 www.01cool.com

; <<>> DiG 9.7.0-P2 <<>> @211.99.204.77 www.01cool.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 25575
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;www.01cool.com.                        IN      A

;; Query time: 108 msec
;; SERVER: 211.99.204.77#53(211.99.204.77)
;; WHEN: Fri Jun 25 18:57:27 2010
;; MSG SIZE  rcvd: 32
~                                    
--------------
ShanyiWan
2010-06-25