Hello, how to hiden dns version on ispconfig, i am using debian stretch. Message from dnsstuff: One or more nameservers responded to version queries. This can be considered a breach of security. If a malicious person or program had access to a version-specific exploit for your DNS server, displaying the version info openly will make their attack much easier. This should be removed or obscured. The nameservers that responded to version queries are: 188.8.131.52 responded with "9.10.3-P4-Debian" 184.108.40.206 responded with "9.10.3-P4-Debian" Thanks.