Dan Mahoney, System Admin wrote: >> >> >> ie: is the localhost DNS server working properly? > > Yes, it is. I'm not seeing any major errors in /var/log/messages, and > I'm seeing some rules match on this. It would be quasi-helpful if the > error logged what lookup was actually timing out (i.e. > 1.1.168.192.someblacklist.org or whatever) so that one could try and > diagnose this stuff with tcpdump or querylogs. > > It's not doing it right now -- it appears to be something that only > happens when the system is under reasonably high load, but I *did* > verify that lookups were working when I was getting these messages.
Hmm, have you tried hitting the local named with queryperf (it's a DNS mass-querry load-test.) What named are you using?
