Our ISP operations are running a mixture of 9.7.3 and 9.8.4 on several Debian servers and we've noticed that rndc flushname doesn't work many times.
This weekend we had a local institution whose own authoritative DNS servers [all of them] were offline for 48+ hours and so there were several negatively cached entries in our resolvers' caches from customers who were querying for their institutions website and MX record. After the institution restored connectivity to their DNS servers this afternoon I checked all our resolvers and a few returned NXDOMAIN for the www and MX record. Issuing rndc flushname <domain> and rndc flushname <www.domain> didn't clear out the NXDOMAIN. I had to use "rndc flush" to resolve the issue. Is this expected behavior? The next time I see what, what troubleshoot steps should I take diagnose the issue? Dump the DB? Frank _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
