Perfect Server CentOS 8, ISPConfig 3.2.6 I'm seeing a lot of these in the messages log: Code: Jan 23 03:32:40 dns named: error (unexpected RCODE REFUSED) resolving 'mydomain.com/MX/IN' it switches from MX to NS, from domain to domain, several each second. Some of them are dead domains, i think, if that helps. I'm assuming it's an attempt to find something wrong to expolit. that said, is there a way to block this type of request (if it's specific or unique and not needed) or a way to not record these log entries, or add more info to the entry to be able to block them somehow? Or is this actually a prblem that needs a fix? I read elsewhere there used to be a "category lame-servers null' fix (add to named.conf logging section) to disable these entries, but that doesn't appear to be an option any longer (i tried, it complained: /etc/named.conf:18: unknown option 'category' ). I'm partly worried I might have a hole, but otherwise mostly annoyed. Thanks!