hammering my server with bad queries

[Jim Reid]

>>>>> "Thomas" == Thomas Duterme <thomas at madeforchina.com> writes:

    Thomas> Ok, so the ex-dns admin used to call our primary
    Thomas> nameserver ns1 and ns2.madeforchina.com.

    Thomas> I found out that Shanghai Telecom's dialup DNS server is
    Thomas> hammering us:

    Thomas> I know, I could create records for ns1 and ns2, but this
    Thomas> is really bothering me...I wanna find out why they are
    Thomas> pounding my nameserver.

Have you tried asking the owner of that system? Maybe they forward to
you old name server or have its IP address hard-coded into a config
file or script? Maybe there's a glue record for the old server's
address still lying around a parent zone like .com or .cn.