We are seeing a lot of this request on our server and it has been going on for several days. Any idea what this is, whether we should worry about it and if so what we can do to prevent it?
Apr 4 09:15:59 nova named[12172]: DNS format error from 101.226.66.18#53 resolving ns-open1.qq.com/AAAA: invalid response Apr 4 09:15:59 nova named[12172]: DNS format error from 182.254.16.102#53 resolving ns-os1.qq.com/AAAA: invalid response Apr 4 09:15:59 nova named[12172]: DNS format error from 182.254.16.102#53 resolving ns-open1.qq.com/AAAA: invalid response Apr 4 09:16:00 nova named[12172]: DNS format error from 182.254.16.102#53 resolving ns-open3.qq.com/AAAA: invalid response Apr 4 09:16:00 nova named[12172]: DNS format error from 182.254.16.102#53 resolving ns-open2.qq.com/AAAA: invalid response Apr 4 09:16:03 nova named[12172]: DNS format error from 182.254.111.100#53 resolving ns-os1.qq.com/AAAA: invalid response
Thanks, Jeff
Comments
Submitted by andreychek on Mon, 04/04/2016 - 12:10 Comment #1
Howdy -- it looks like there's a DNS error looking up a particular domain. However, are you experiencing a problem with any of your domains?
What I see there seems likely to be a harmless error, perhaps something generated from a website or incoming email.
For example, if an email were sent to your server containing an invalid or bad domain name, and SpamAssassin tried to do a test on it, that could possibly cause the error you're seeing there.
I wouldn't be too concerned though, unless you're receiving reports of trouble accessing one of your domains.
Submitted by methownet on Mon, 04/04/2016 - 16:46 Pro Licensee Comment #2
All the domains are running fine. We ran low on disk space and it caused all sorts of strange issues but I talked to another one of the techs here and he said this error has been going on for years without any issues (confirming what you said above). Thanks, Jeff