2025-01-24 09:55:58: Healthcheck: DNS Resolution Failed on attempt 1 for fuzzy.mailcow.email! Trying again…
2025-01-24 09:56:00: Healthcheck: DNS Resolution Failed on attempt 2 for fuzzy.mailcow.email! Trying again…
2025-01-24 09:56:02: Healthcheck: DNS Resolution Failed on attempt 3 for fuzzy.mailcow.email! Trying again…
2025-01-24 09:56:02: Healthcheck: DNS Resolution not possible after 3 attempts for fuzzy.mailcow.email… Gave up!
2025-01-24 09:56:04: Healthcheck: DNS Resolution Failed on attempt 1 for github.com! Trying again…
2025-01-24 09:56:06: Healthcheck: DNS Resolution Failed on attempt 2 for github.com! Trying again…
2025-01-24 09:56:07: Healthcheck: DNS Resolution Failed on attempt 3 for github.com! Trying again…
2025-01-24 09:56:07: Healthcheck: DNS Resolution not possible after 3 attempts for github.com… Gave up!
2025-01-24 09:56:09: Healthcheck: DNS Resolution Failed on attempt 1 for hub.docker.com! Trying again…
2025-01-24 09:56:11: Healthcheck: DNS Resolution Failed on attempt 2 for hub.docker.com! Trying again…
2025-01-24 09:56:13: Healthcheck: DNS Resolution Failed on attempt 3 for hub.docker.com! Trying again…
2025-01-24 09:56:13: Healthcheck: DNS Resolution not possible after 3 attempts for hub.docker.com… Gave up!
2025-01-24 09:56:13: Healthcheck: Too many DNS failures (1 failures allowed, you got 3 failures), marking Healthcheck as unhealthy…
2025-01-24 09:56:51: Healthcheck: DNS Resolution Failed on attempt 1 for fuzzy.mailcow.email! Trying again…
2025-01-24 09:56:53: Healthcheck: DNS Resolution Failed on attempt 2 for fuzzy.mailcow.email! Trying again…
2025-01-24 09:56:55: Healthcheck: DNS Resolution Failed on attempt 3 for fuzzy.mailcow.email! Trying again…
2025-01-24 09:56:55: Healthcheck: DNS Resolution not possible after 3 attempts for fuzzy.mailcow.email… Gave up!
2025-01-24 09:56:57: Healthcheck: DNS Resolution Failed on attempt 1 for github.com! Trying again…
2025-01-24 09:56:59: Healthcheck: DNS Resolution Failed on attempt 2 for github.com! Trying again…
2025-01-24 09:57:01: Healthcheck: DNS Resolution Failed on attempt 3 for github.com! Trying again…
2025-01-24 09:57:01: Healthcheck: DNS Resolution not possible after 3 attempts for github.com… Gave up!
2025-01-24 09:57:03: Healthcheck: DNS Resolution Failed on attempt 1 for hub.docker.com! Trying again…
2025-01-24 09:57:05: Healthcheck: DNS Resolution Failed on attempt 2 for hub.docker.com! Trying again…
2025-01-24 09:57:08: Healthcheck: DNS Resolution Failed on attempt 3 for hub.docker.com! Trying again…
2025-01-24 09:57:08: Healthcheck: DNS Resolution not possible after 3 attempts for hub.docker.com… Gave up!
2025-01-24 09:57:08: Healthcheck: Too many DNS failures (1 failures allowed, you got 3 failures), marking Healthcheck as unhealthy…
2025-01-24 09:57:46: Healthcheck: DNS Resolution Failed on attempt 1 for fuzzy.mailcow.email! Trying again…

help me please

i’m using hetzner hosting, Ubuntu 22.04.5 LTS

i’m using hetzner hosting, Ubuntu 22.04.5 LTS

  • EETNyx

      Moolevel 46
    • Post #2

    Please try resolving DNS from your host and container
    dig fuzzy.mailcow.email +trace
    docker exec mailcowdockerized-unbound-mailcow-1 dig fuzzy.mailcow.email +trace

    Have something to say?

    Join the community by quickly registering to participate in this discussion. We'd like to see you joining our great moo-community!

    ; <<>> DiG 9.18.27 <<>> fuzzy.mailcow.email +trace
    ;; global options: +cmd

    . 4986 IN NS c.root-servers.net.
    . 4986 IN NS m.root-servers.net.
    . 4986 IN NS i.root-servers.net.
    . 4986 IN NS g.root-servers.net.
    . 4986 IN NS k.root-servers.net.
    . 4986 IN NS e.root-servers.net.
    . 4986 IN NS b.root-servers.net.
    . 4986 IN NS j.root-servers.net.
    . 4986 IN NS f.root-servers.net.
    . 4986 IN NS d.root-servers.net.
    . 4986 IN NS h.root-servers.net.
    . 4986 IN NS l.root-servers.net.
    . 4986 IN NS a.root-servers.net.
    ;; Received 239 bytes from 127.0.0.11#53(127.0.0.11) in 0 ms

    ;; communications error to 2001:500:a8::e#53: timed out
    ;; communications error to 2001:500:a8::e#53: timed out
    ;; communications error to 2001:500:a8::e#53: timed out
    ;; communications error to 2801:1b8:10::b#53: timed out
    ;; communications error to 198.41.0.4#53: timed out
    ;; communications error to 193.0.14.129#53: timed out
    ;; communications error to 2001:dc3::35#53: timed out
    ;; communications error to 198.97.190.53#53: timed out
    ;; communications error to 202.12.27.33#53: timed out
    ;; communications error to 192.33.4.12#53: timed out
    ;; communications error to 2001:500:12::d0d#53: timed out
    ;; communications error to 2001:7fe::53#53: timed out
    ;; communications error to 192.36.148.17#53: timed out
    ;; communications error to 2001:500:1::53#53: timed out
    ;; communications error to 2001:500:9f::42#53: timed out
    ;; communications error to 192.5.5.241#53: timed out
    ;; communications error to 192.112.36.4#53: timed out
    ;; communications error to 2001:503:c27::2:30#53: timed out
    ;; communications error to 2001:500:2::c#53: timed out
    ;; communications error to 199.7.83.42#53: timed out
    ;; communications error to 2001:500:2d::d#53: timed out
    ;; communications error to 2001:503:ba3e::2:30#53: timed out
    ;; communications error to 199.7.91.13#53: timed out
    ;; communications error to 2001:500:2f::f#53: timed out
    ;; communications error to 192.58.128.30#53: timed out
    ;; communications error to 2001:7fd::1#53: timed out
    ;; communications error to 170.247.170.2#53: timed out
    ;; communications error to 192.203.230.10#53: timed out
    ;; no servers could be reached

    • EETNyx

        Moolevel 46
      • Post #4

      Hmm no communication on port 53 over both 4 and 6 IPv,… Any firewall involved? Including Hetnzer firewall service?

      only hetzner firewall

      • EETNyx

          Moolevel 46
        • Post #6

        Ok, try to disable it for a moment and try that dig again if it will resolve IP

        hetzner has static firewall, i can’t just disable it.

        • EETNyx

            Moolevel 46
          • Post #8

          Well than add tcp and udp outbound rule for port 53 to allow outcomming dns traffic

          still not working for me, 53 port opened for outcoming and incoming.

          • Braedach

              Moolevel 0
            • Post #10
            • Edited

            Had the same problem.

            My solution at the moment was to disable ipv6 in unbound as I have an ipv6 network but run mailcow on a Proxmox server in a debian 12 LXC container.

            Go to the following file mailcow-dockerized/data/conf/unbound/unbound.conf
            Where you see do-ip6: no
            Restart the entire stack - you should now only get a slight problem with fuzzy.mailcow.email
            But not enough to bring down the container.
            After the docker compose down and docker compose up -d all the containers should come up

            Im still working on the ipv6 issue, my docker daemon.json file looks like this but I am learning

            {
            "log-driver": "journald",
            "dns": ["192.168.1.1", "2001:8003:9939:4000::1", "fe80::f4e2:c6ff:feee:63da"],
            "ip6tables": true,
            "experimental" : true,
            "userland-proxy": true,
            "selinux-enabled": true,
            "data-root": "/var/lib/docker"
            }
            It should work.

            My issue at the moment is SSL certificates as my global DNS entries all point to internal Ip addresses for ipv4/ipv6 and guess what I can’t get the ipv6 to run properly 🙂

              Braedach its not working for me.. still need help with it.

                Okay what error is it throwing.

                Okay, I figured out what the problem was, just some difficulties with the Hetzner setup

                No one is typing