Hi,
I find an error when I test the dns in the DOMINI menu, after a long time on all the records it appears to me: 0: php_network_getaddresses: getaddrinfo failed: Try again
what can i check?
thank you very much

  • diekuh

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    Moolevel 110
  • Post #2

I think you have a NAT reflection problem. Are you using pfSense/OPNsense in front of mailcow?

It is probably not able to connect to “itself” via public IP.

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    hi no I don’t use pfSense / OPNsense, but I’m in nat.
    this thing, however, has been happening for a few days and has not always done so and nothing has been changed on the router (mikrotik).
    But along with this, a problem with the acme container also happened, which was then solved, here you can see the issue mailcow/mailcow-dockerized3588
    thanks for the quick response

    3 years later

    diekuh I have the same problem and use OPNsense. Ports are released and DNS entries are also correct, but the error message still remains. do you have a tip for me?

    regards
    Sakis

      Did you check the firewall requirements are all done properly?
      https://docs.mailcow.email/prerequisite/prerequisite-system/#firewall-ports

      docs.mailcow.email
      https://docs.mailcow.email/prerequisite/prerequisite-system/#firewall-ports
      No preview could be generated for this link

      Read it until the end, if you are on a VPS.

      Check if reflexive NAT rules are set up.
      And please check log files. Is something not working besides that DNS check in the GUI?

      a month later

      yes, here is the output.
      # ss -tlpn | grep -E -w '25|80|110|143|443|465|587|993|995|4190'
      LISTEN 0 4096 127.0.0.1:37353 0.0.0.0:* users:(("containerd",pid=110,fd=8))
      LISTEN 0 4096 0.0.0.0:587 0.0.0.0:* users:(("docker-proxy",pid=201309,fd=4))
      LISTEN 0 4096 0.0.0.0:993 0.0.0.0:* users:(("docker-proxy",pid=217750,fd=4))
      LISTEN 0 4096 0.0.0.0:995 0.0.0.0:* users:(("docker-proxy",pid=217723,fd=4))
      LISTEN 0 4096 0.0.0.0:143 0.0.0.0:* users:(("docker-proxy",pid=217772,fd=4))
      LISTEN 0 4096 0.0.0.0:25 0.0.0.0:* users:(("docker-proxy",pid=201388,fd=4))
      LISTEN 0 4096 0.0.0.0:110 0.0.0.0:* users:(("docker-proxy",pid=217794,fd=4))
      LISTEN 0 4096 0.0.0.0:4190 0.0.0.0:* users:(("docker-proxy",pid=217695,fd=4))
      LISTEN 0 4096 0.0.0.0:465 0.0.0.0:* users:(("docker-proxy",pid=201349,fd=4))
      LISTEN 0 4096 [::]:587 [::]:* users:(("docker-proxy",pid=201316,fd=4))
      LISTEN 0 4096 [::]:993 [::]:* users:(("docker-proxy",pid=217759,fd=4))
      LISTEN 0 4096 [::]:995 [::]:* users:(("docker-proxy",pid=217731,fd=4))
      LISTEN 0 4096 [::]:143 [::]:* users:(("docker-proxy",pid=217778,fd=4))
      LISTEN 0 4096 [::]:25 [::]:* users:(("docker-proxy",pid=201395,fd=4))
      LISTEN 0 4096 [::]:110 [::]:* users:(("docker-proxy",pid=217802,fd=4))
      LISTEN 0 4096 [::]:4190 [::]:* users:(("docker-proxy",pid=217703,fd=4))
      LISTEN 0 4096 [::]:465 [::]:* users:(("docker-proxy",pid=201356,fd=4))

      Check if reflexive NAT rules are set up.

      how and where can I check this?

      greetings
      sakis

      8 months later

      My friend, your ports are not open

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