On Tue, Jun 22, 2010 at 02:31:44PM +0200, Mario Caruso wrote: > Here is an except from the daemon log files, can someone explain me what is > happening ?
Hi Mario, It is good to hear that you switched to PowerDNS. I hope it will work well for you. Regarding the case below: > Jun 22 14:16:43 elan pdns_recursor[26638]: [2048] www.cafsials.it.: Trying IP > 213.92.11.34:53, asking 'www.cafsials.it.|A' > Jun 22 14:16:43 elan pdns_recursor[26638]: [2048] www.cafsials.it.: Got 2 > answers from ns2.register.it. (213.92.11.34), rcode=3, in 41ms > Jun 22 14:16:43 elan pdns_recursor[26638]: [2048] www.cafsials.it.: accept > answer 'www.cafsials.it.|CNAME|web.dataufficio.com.' from 'cafsials.it.' > nameservers? YES! > Jun 22 14:16:43 elan pdns_recursor[26638]: [2048] www.cafsials.it.: accept > answer 'dataufficio.com.|SOA|ns1.register.it. hostmaster.register.it. > 2004061701 10800 3600 604800 86400' from 'cafsials.it.' nameservers? NO! > Jun 22 14:16:43 elan pdns_recursor[26638]: [2048] www.cafsials.it.: > determining status after receiving this packet > Jun 22 14:16:43 elan pdns_recursor[26638]: [2048] www.cafsials.it.: > status=NXDOMAIN, we are done The problem here is that 'ns2.register.it' returns an authoritative NXDOMAIN RCode. In this case, the NXDOMAIN is a lie, since you could actually decide to 'trust' that data. However, it is generally not a good idea to make a nameserver program around a bug of someone else. In this case, it is nice that it works in BIND. If you measure, you find that BIND and PowerDNS resolve about the same amount of domains correctly. There will be some domains that work well in PowerDNS and not in BIND and the other way around. So please ask 'register.it' to solve their nameserver. Kind regards, Bert Hubert PS: in powerdns recursor 3.3, this domain will start working anyhow after the first query. So the practical problem is limited there. > Jun 22 14:16:43 elan pdns_recursor[26638]: [2048] www.cafsials.it.: failed > (res=3) > Jun 22 14:16:43 elan pdns_recursor[26638]: 0 [2048] answer to question > 'www.cafsials.it.|A': 1 answers, 0 additional, took 2 > packets, 0 throttled, 0 timeouts, 0 tcp connections, rcode=3 > _______________________________________________ > Pdns-users mailing list > Pdns-users@mailman.powerdns.com > http://mailman.powerdns.com/mailman/listinfo/pdns-users _______________________________________________ Pdns-users mailing list Pdns-users@mailman.powerdns.com http://mailman.powerdns.com/mailman/listinfo/pdns-users