Problem DNS Solaris

[Hudson]

Hello,

I am with a problem in my server dns installed with solaris9 and bind. 
The servers are recursives to my environment and the messages before 
appear with very frequency. What is happening?

rsv5 -> 200.216.205.130 DNS C dacasa-dns-01.dacasa.com.br. Internet 
Unknown (28) ?
        rsv5 -> 200.216.205.130 DNS C dacasa-dns-01.dacasa.com.br. 
Internet Unknown (38) ?
        rsv5 -> 200.216.205.130 DNS C dacasa-dns-02.dacasa.com.br. 
Internet Unknown (28) ?
        rsv5 -> 200.216.205.130 DNS C dacasa-dns-02.dacasa.com.br. 
Internet Unknown (38) ?
rsv5 -> 200.170.114.153 DNS R media.fastclick.net. Internet CNAME 
vcm-media.valueclick.akadns.net.
        rsv5 -> 207.15.68.36 DNS C sacrdns01.spcsdns.net. Internet 
Unknown (28) ?
        rsv5 -> 207.15.68.36 DNS C sacrdns01.spcsdns.net. Internet 
Unknown (38) ?
        rsv5 -> 207.15.68.36 DNS C santdns01.spcsdns.net. Internet Addr ?
        rsv5 -> 207.15.68.36 DNS C santdns01.spcsdns.net. Internet 
Unknown (28) ?
63.209.3.132 -> rsv5         DNS R 
ns8-stats.netscape.com.websys.akadns.net. Internet Addr 205.188.96.116
        rsv5 -> 201.20.245.148 DNS R ns8-stats.netscape.com. Internet 
CNAME ns8-stats.netscape.com.websys.akadns.net.
        rsv5 -> 201.20.223.166 DNS R geo.yahoo.com. Internet CNAME 
b1.data.yahoo7.akadns.net.
        rsv5 -> 201.44.76.133 DNS C dns3.linkway.com.br. Internet 
Unknown (28) ?
        rsv5 -> 201.44.76.133 DNS C dns3.linkway.com.br. Internet 
Unknown (38) ?
        rsv5 -> 201.44.76.133 DNS C dns4.linkway.com.br. Internet 
Unknown (28) ?
        rsv5 -> 201.44.76.133 DNS C dns4.linkway.com.br. Internet 
Unknown (38) ?
        rsv5 -> 201.44.76.133 DNS C dns5.linkway.com.br. Internet 
Unknown (28) ?
        rsv5 -> 201.44.76.133 DNS C dns5.linkway.com.br. Internet 
Unknown (38) ?
        rsv5 -> 222.73.250.186 DNS C dns2.ali213.net. Internet Unknown 
(38) ?
        rsv5 -> 222.73.250.186 DNS C dns2.ali213.net. Internet Unknown 
(28) ?
        rsv5 -> 222.73.250.186 DNS C dns1.ali213.net. Internet Unknown 
(38) ?
        rsv5 -> 222.73.250.186 DNS C dns1.ali213.net. Internet Unknown 
(28) ?

Thank you for help!!!