30 Oct
2007
30 Oct
'07
5:43 p.m.
Klaus Darilion schrieb:
Hi Nick!
This is a known problem with ENUM - lame delegations will increase DNS
lookup duration and you can't avoid it (it also happened to e164.arpa
last year when Italy's name server were offline).
Hi! It is again Italy:
dig 1.2.3.9.3.e164.arpa naptr +trace
; <<>> DiG 9.2.4 <<>> 1.2.3.9.3.e164.arpa naptr +trace
;; global options: printcmd
. 518400 IN NS K.ROOT-SERVERS.NET.
. 518400 IN NS L.ROOT-SERVERS.NET.
. 518400 IN NS M.ROOT-SERVERS.NET.
. 518400 IN NS A.ROOT-SERVERS.NET.
. 518400 IN NS B.ROOT-SERVERS.NET.
. 518400 IN NS C.ROOT-SERVERS.NET.
. 518400 IN NS D.ROOT-SERVERS.NET.
. 518400 IN NS E.ROOT-SERVERS.NET.
. 518400 IN NS F.ROOT-SERVERS.NET.
. 518400 IN NS G.ROOT-SERVERS.NET.
. 518400 IN NS H.ROOT-SERVERS.NET.
. 518400 IN NS I.ROOT-SERVERS.NET.
. 518400 IN NS J.ROOT-SERVERS.NET.
;; Received 244 bytes from 83.136.32.190#53(83.136.32.190) in 23 ms
e164.arpa. 172800 IN NS ns0.verio.net.
e164.arpa. 172800 IN NS sec3.apnic.net.
e164.arpa. 172800 IN NS sunic.sunet.se.
e164.arpa. 172800 IN NS ns-pri.ripe.net.
e164.arpa. 172800 IN NS tinnie.arin.net.
e164.arpa. 172800 IN NS e164-arpa.cnnic.net.cn.
;; Received 205 bytes from 193.0.14.129#53(K.ROOT-SERVERS.NET) in 30 ms
9.3.e164.arpa. 14400 IN NS dns2.istsupcti.it.
9.3.e164.arpa. 14400 IN NS dns.istsupcti.it.
;; Received 86 bytes from 192.102.248.135#53(ns0.verio.net) in 159 ms
;; connection timed out; no servers could be reached
As a workaround you can configure the Italien zone 9.3.e164.arpa in your
resolver.
regards
Klaus
You should adjust DNS timeouts (see core cookbook on openser wiki) and
make sure to reply with 100 trying before the ENUM lookup.
regards
klaus
Nick Warr schrieb:
I'm having some real problems with enum
lookup delays (20 or 30 seconds
before they come back) I'm using e164.arpa then nrenum.net, these seem
to have worked fine until yesterday evening it seems...
Does anyone have any info on whether either of these services is having
problems???
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