I am trying to determine whether it is a routing issue or my IP or
domain have been blacklisted.
Running traceroute the problem appears to be at
ex9k1.dc6.hel1.hetzner.com (213.239.252.198) which is in Germany.
traceroute to www.postfix.org (65.108.3.114), 30 hops max, 60 byte
packets
1 router.internal.grifent.com (192.168.1.1) 0.113 ms 0.134 ms
0.118 ms
2 47.204.132.1 (47.204.132.1) 1.413 ms 0.817 ms 0.800 ms
3 ae10--100.ber01.clwr.fl.frontiernet.net (184.19.249.122) 4.465
ms ae10--100.ber01.tamp.fl.frontiernet.net
(184.19.249.120) 3.494 ms 3.476 ms
4 ae11---0.scr04.mias.fl.frontiernet.net (74.40.10.182) 12.565 ms
ae11---0.scr03.mias.fl.frontiernet.net (7
4.40.10.180) 8.725 ms ae11---0.scr04.mias.fl.frontiernet.net
(74.40.10.182) 14.634 ms
5 ae0---0.cbr06.mias.fl.frontiernet.net (45.52.201.157) 8.565 ms
10.598 ms 8.534 ms
6 4.2.240.253 (4.2.240.253) 13.544 ms 12.384 ms 13.751 ms
7 ae2.2.edge1.hel1.neo.colt.net (171.75.10.35) 153.129 ms 153.090
ms 151.388 ms
8 212.133.6.2 (212.133.6.2) 150.417 ms 151.323 ms 149.823 ms
9 core31.hel1.hetzner.com (213.239.224.38) 149.999 ms
core32.hel1.hetzner.com (213.239.224.26) 150.040 ms
core31.hel1.hetzner.com (213.239.224.38) 150.826 ms
10 ex9k1.dc6.hel1.hetzner.com (213.239.252.198) 151.082 ms
156.005 ms 155.985 ms
11 * * *
12 * * *
13 * * *
14 * * *
15 * * *
16 *^C
When I run whois on 65.108.3.114 I find that it belongs to Hetzner
Online GmbH and is transferred to RIPE Network Coordination Centre (RIPE).
When I run whois on postfix.org, I get:
whois postfix.org
connect: Connection refused
So it seems my IP or domain have been blacklisted. Why?
John
On 2/11/25 12:13, Florian Piekert via Postfix-users wrote:
Hello,
that doesn't seem to be a general non-accessibility of the server:
root@sonne:~# host www.postfix.org
www.postfix.org is an alias for postfix-mirror.horus-it.com.
postfix-mirror.horus-it.com has address 65.108.3.114
postfix-mirror.horus-it.com has IPv6 address 2a01:4f9:6a:528d::a
root@sonne:~# ping postfix-mirror.horus-it.com.
PING postfix-mirror.horus-it.com. (2a01:4f9:6a:528d::a) 56 data bytes
64 bytes from ra.horus-it.com (2a01:4f9:6a:528d::a): icmp_seq=1 ttl=54
time=51.2 ms
64 bytes from ra.horus-it.com (2a01:4f9:6a:528d::a): icmp_seq=2 ttl=54
time=51.0 ms
^C
--- postfix-mirror.horus-it.com. ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 1000ms
rtt min/avg/max/mdev = 51.010/51.093/51.176/0.083 ms
root@sonne:~# wget www.postfix.org
--2025-02-11 18:12:55-- http://www.postfix.org/
Resolving www.postfix.org (www.postfix.org)... 2a01:4f9:6a:528d::a,
65.108.3.114
Connecting to www.postfix.org
(www.postfix.org)|2a01:4f9:6a:528d::a|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 5726 (5.6K) [text/html]
Saving to: 'index.html'
index.html
100%[==========================================================================================>]
5.59K --.-KB/s in 0s
2025-02-11 18:12:55 (647 MB/s) - 'index.html' saved [5726/5726]
Maybe some routing issues of your upstream provider?
Am 11.02.2025 um 17:46 schrieb John Griffiths via Postfix-users:
Sorry for the interruption of postfix technical discussions.
I cannot reach the www.postfix.org server. I have to use a mirror if
I want to get to the documentation.
I've found using host and dig that www.postfix.org is a cname for
postfix-mirror.horus-it.com (65.108.3.114). That mirror is not listed
in the the status of postfix-web mirrors at
www.porcupine.org/mirmon/postfix-web.html.
The closest mirror to me, ghostarchive.org, has been down for 274.9
days. I have been using mirror.reverse.net to get to the documentation.
Is there a DNS issue pointing to a bad mirror, or is my IP or domain
being blocked?
My IP is 47.201.27.231 and the domain is grifent.com. My router pulls
a DHCP IP from Frontier.com but the IP has remained the same for a
long time since my router renews the lease or requests the last IP
when rebooting.
John
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