Search Again: Re: War zone From: Men & Mice Support Date: Wednesday, February 2, 2000 Time: 3:45:00 pm At 4:28 PM +0100 2/2/00, Molnár Simon wrote: >on 2/2/00 4:15 PM, Men & Mice Support at cbuxton@menandmice.com wrote: > >> I am unable to reproduce this behavior. I got the same answer 30 >> times out of 30. >A lame questions: could this be due to _our_ ISP? Or someone els between us >and Nokia? That is the implication, yes. What happens when you trace to their DNS servers? Traceroute stops short of their network, but it gets to what apparently is their ISP, telenordia.fi. Response times from them to me (in the US) take no more than about 3/4 of a second, usually closer to 300 ms. >>> I talked with funet.fi and was told that "Nokia was connected to the rest of >>> the Internet through our network until the end of 1998." >> Yes, I'd noticed this. The problem is that Nokia's domain >> registration record hasn't been changed to reflect the fact that >> ns-secondary.funet.fi is no longer authoritative for the domain. >> >> What happens as a result is, QuickDNS queries the funet.fi server and >> finds that the delegation is lame. It also queries the other two >> listed servers at the same time, though, so there there should be no >> delay in resolving the query. If either of the Nokia servers responds >> correctly and quickly, everything should be fine. >But how could this affect sending mail to e.g. nmp.nokia.com? If their servers don't respond, perhaps due to a transient network failure between you and them, or (especially) if they give the response you saw earlier - 35 seconds, then a response of "no records found". That could kill an attempt to send mail to them. An incorrect response of no records found probably indicates an internal failure of the DNS server, as its hash table lookup routine fails to return. That's the educated guess of a non-programmer (me), by the way. ____________________________________________________________________ Chris Buxton cbuxton@menandmice.com Men & Mice http://www.menandmice.com Makers of: QuickDNS Pro

Messages In This Thread: War zone by Molnár Simon on Feb 2, 2000 at 1:28:00 pm Re: War zone by Peter Nilsson on Feb 2, 2000 at 1:43:00 pm Re: War zone by Men & Mice Support on Feb 2, 2000 at 1:53:00 pm Re: War zone by Molnár Simon on Feb 2, 2000 at 2:13:00 pm Re: War zone by Men & Mice Support on Feb 2, 2000 at 2:41:00 pm Re: War zone by Molnár Simon on Feb 2, 2000 at 2:50:00 pm Re: War zone by Men & Mice Support on Feb 2, 2000 at 3:15:00 pm Re: War zone by Molnár Simon on Feb 2, 2000 at 3:28:00 pm Re: War zone by Men & Mice Support on Feb 2, 2000 at 3:45:00 pm