What is the cause, and how can I stop this request on example.com from my ip (xxx.xxx.xxx.xxx) being continually repeated in /var/log/syslog?
Apr 14 20:37:10 example.com named[1663]: client xxx.xxx.xxx.xxx#35295: query (cache) 'google.com/TXT/IN' denied
The server is a simple mail relay with postfix on Debian and I cannot find related actions in any logs, so fear it is an intrusion attempt.