named.conf - logfile question

[herbert langhans <herbert.raimund%langhans.com.pl@localhost>]

Hi List,
in /var/log/messages I recently found a lot of these:

<snip>
1456 Dec  9 12:25:03 manul named[22157]: client 62.213.199.236#41159:
query (cache) 'crashworx     .com/A/IN' denied
1457 Dec  9 12:25:36 manul named[22157]: client 62.213.199.236#34378:
query (cache) 'konzertor     chester-offenbach.de/A/IN' denied
1458 Dec  9 12:25:36 manul named[22157]: client 62.213.199.236#54715:
query (cache) 'gratisinf     o.nl/A/IN' denied
</snip>

By what I found out so far is, that named is doing its job and denies
access to domains what are not registered on my server(?) (or ip?). Its
said to be fine and named is doing its job.

I'd like to get rid of the thousands entries in my logfile. I checked man
named.conf - its some kind of rocket science.

Can anybody help me out what to add to named.conf in the section 
logging{};
to stop this entries to appear. I tried hints found on Google, but these
dont work on NetBSD 5.1 and BIND 9.5.2-P2.

Thanks
herb langhans