FORMERR in dns log server
Hello,
i'm checking the log files of our mac mini 10.9.5 server and in the dns section i get about every minute following error.
05-Feb-2016 15:02:15.006 error (received FORMERR) resolving './NS/IN': 192.168.4.254#53
where 192.168.4.254 is our internet router
Where is this coming from and how can i fix it please?
thank you
Mac mini, OS X Mavericks (10.9.5), Server version 3.2.2