Ron Smith wrote: > > On Jul 25, 2008, at 11:12 AM, Martin.Hepworth wrote: > > > Ron > > > > I'd check what RBL's and URI-RBL's you are running. > > > > If you haven't turned any of them then you're running them all - > > which can lead to very long processing times. > > > > Choose one or two you want by looking through the 20_dnsbl_tests.cf > > file. And give then rest a zero score in local.cf > > > > Running a local caching nameserver on the machine itself can help > > quite a bit here too. > > Hi, Martin. That's also a very good suggestion. Now I thought that > using the -L parameter would turn all those off. I did try that > thinking that that was the case however I really wasn't sure that it > made a difference. I'll try your suggestion on the zero scores in the > local.cf too. > > We do run named on that same server and in fact run a total of four > nameservers. I'll check and make sure that is the one that is the > first choice though in the System Preferences.
DNS tests generally do not cause major slowdowns unless you have one that is not responding. The tests are run in parallel with the rest of the SA tests. The queries are all sent out and then the responses are checked later after the rest of the rules are run. Turning off all the network tests is generally a bad idea since they are VERY helpful in detecting spam. A caching nameserver will definitely help the response times. -- Bowie
