Originally Posted by jeanjacquesjeanjacques
Does it mean that my server had been hacked ?
I don't think that this is from your server being hacked.
As far as I know, it is how ISPConfig always set up, but www.dnsreport.com
has started to report on open DNS servers.
I may be wrong, but I don't think it is much to worry about. Just add the line to fix it.