Hello Ken, On Mar 20, 2012, at 19:10 , k...@rice.edu wrote:
> I am investigating a CNAME resolution problem using > PDNS Recursor 3.3.1. Here is the lookup that fails: > >> nslookup blog.mythandsymbol.com > Server: 127.0.0.1 > Address: 127.0.0.1#53 > > ** server can't find blog.mythandsymbol.com: NXDOMAIN Recursor is returning NXDOMAIN because that's what ns1-3.dreamhost.com, the auths for mythandsymbol.com, are returning: $ dig +norec a blog.mythandsymbol.com @ns1.dreamhost.com ; <<>> DiG 9.7.0-P1 <<>> +norec a blog.mythandsymbol.com @ns1.dreamhost.com ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 40440 ;; flags: qr aa; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 0 ;; QUESTION SECTION: ;blog.mythandsymbol.com. IN A ;; ANSWER SECTION: blog.mythandsymbol.com. 14400 IN CNAME domains.tumblr.com. ;; AUTHORITY SECTION: tumblr.com. 14400 IN SOA ns1.dreamhost.com. hostmaster.dreamhost.com. 2011092301 21293 1800 1814400 14400 ;; Query time: 168 msec ;; SERVER: 66.33.206.206#53(66.33.206.206) ;; WHEN: Wed Mar 21 11:20:51 2012 ;; MSG SIZE rcvd: 130 They are returning NXDOMAIN because somebody configured tumblr.com as a zone in their name server, without adding a 'domains' name in it. Recursor 3.4-pre and newer (and perhaps 3.3) compensate for this misconfiguration, older versions do not. I suggest contacting dream host to have them get rid of tumblr.com; I also suggest upgrading your recursor because there are many more misconfigured domains like this one out there. Kind regards, Peter van Dijk _______________________________________________ Pdns-users mailing list Pdns-users@mailman.powerdns.com http://mailman.powerdns.com/mailman/listinfo/pdns-users
