logging {
    channel "dnssec" {
        file "/var/log/named/dnssec.log";
        print-category yes;
        print-severity yes;
        print-time iso8601-utc;
    };
    channel "security" {
        file "/var/log/named/security.log";
        print-category yes;
        print-severity yes;
        print-time iso8601-utc;
    };
    channel "xfr-in" {
        file "/var/log/named/xfr-in.log";
        print-category yes;
        print-severity yes;
        print-time iso8601-utc;
    };
    channel "xfr-out" {
        file "/var/log/named/xfr-out.log";
        print-category yes;
        print-severity yes;
        print-time iso8601-utc;
    };
    channel "query" {
        file "/var/log/named/queries.log" versions 6 size 1M suffix increment;
        print-category yes;
        print-severity yes;
        print-time iso8601-utc;
    };
    channel "default" {
        file "/var/log/named/named.log";
        print-category yes;
        print-severity yes;
        print-time iso8601-utc;
    };
    category dnssec { dnssec; };
    category security { security; };
    category xfer-in { xfr-in; };
    category xfer-out { xfr-out; };
    category general { default; };
    category config { default; };
    category notify { xfr-out; };
    category zoneload { default; };
    category queries { query; };
};