hello all,
we have trouble from one datacenter in CH to reach a special DNS server of one of our business partners in Argentina. And only from this datacenter / IP-subnet. but it doesn't look like a local problem.
from all other locations in Belarus/Brasil/Hungary/France/Germany and also via ADSL-links of Sunrise in CH or via Cable Internet by Cablecom in CH we can connect without any trouble.
so the problem can be: - local - on way - remote side
see failure exemplary from one host in this datacenter:
[root@ns1 root]# nslookup
server ns1.allytech.com
Default server: ns1.allytech.com Address: 200.49.145.101#53
mail.rebel-management.com
Server: ns1.allytech.com Address: 200.49.145.101#53
** server can't find mail.rebel-management.com: SERVFAIL
server 200.49.145.101
Default server: 200.49.145.101 Address: 200.49.145.101#53
mail.rebel-management.com
;; connection timed out; no servers could be reached
from all other locations in Belarus/Brasil/Hungary/France/Germany and also via ADSL-links of Sunrise in CH we can connect without any trouble:
root@PP208upFW01:/home/admin# nslookup
server 200.49.145.101
Default server: 200.49.145.101 Address: 200.49.145.101#53
mail.rebel-management.com
Server: 200.49.145.101 Address: 200.49.145.101#53
Name: mail.rebel-management.com Address: 200.49.145.27
we contacted already our provider of our datacenter, but we think the problem is at the end DNS, or on the way, because also every trace from any location shows trouble near to this DNS:
12 cablevision-s-a.tengigabitethernet3-4.ar3.eze1.gblx.net (207.136.166.242) 334.160 ms 331.279 ms 332.844 ms 13 * * * 14 * * * 15 smtp1.dnscheck.com.ar (200.49.145.101) 339.278 ms 341.718 ms 364.889 ms
and we fond only problems with this single DNS there. (sure, can be also local by our provider - we will see - but can not believe it)
Please do me a favor: try from your datacenter to resolve via this DNS
Default server: ns1.allytech.com Address: 200.49.145.101#53
to resolve
mail.rebel-management.com
and report also problems by connecting this DNS with infos of your provider to: swinog-ch@hightowernet.de
many thanks in advance
stephan