[MaraDNS list] Bad queries

Hello everyone.
I get a lot of, I mean A LOT of "Bad query received" messages from MaraDNS
inside the log file;

Jun 12 21:56:41 ns2 /usr/local/sbin/maradns:  Log: I'm sorry Dave (recurse
attempt)
Jun 12 21:56:41 ns2 /usr/local/sbin/maradns:  Log: Message received,
processing
Jun 12 21:56:41 ns2 /usr/local/sbin/maradns: Query from: 81.23.12.44
Uns2.mydomain.com.
Jun 12 21:56:41 ns2 /usr/local/sbin/maradns:  Log: Bad query received:
\\011\\336\\000\\020\\000\\001\\000\\000\\000\\000\\000\\001\\003ns2\\014mydomain\\003com\\000\\000\\034\\000\\001\\000\\000)\\020\\000\\000\\000\\200\\000\\000\\000
Jun 12 21:56:41 ns2 /usr/local/sbin/maradns: From IP: 81.23.12.44
Jun 12 21:56:41 ns2 /usr/local/sbin/maradns:  Log: I'm sorry Dave (recurse
attempt)

Any idea on reducing such annoying messages?

I'm using the latest stable version;
# maradns -v
This is MaraDNS version 2.0.07

Thanks.