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  3. PTR record reports being set wrong

PTR record reports being set wrong

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ptrdns
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  • A Offline
    A Offline
    AartJansen
    wrote on last edited by girish
    #1

    claims the ip resolves to nextcloud.domain.nz instead of my.domain.nz

    Checking it externally, says its set correctly only the server seems to mismatch it. Running 7.6.4

    Had this problem in december intermittantly, now its consistent.
    My concern is that it might affect mail delivery, although if the PTR works correctly externally it probably wont be an issue.

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    1
    • jdaviescoatesJ Offline
      jdaviescoatesJ Offline
      jdaviescoates
      wrote on last edited by
      #2

      You topic title confuses me

      " PTR record reports being set wrong "

      Cloudron does not and cannot set PTR aka rDNS (or reverse DNS) records. You have to set it.

      Based on what you've written, presumably you actually mean something like "Cloudron reports the PTR record as being incorrect, but it isn't", is that right? 🤔

      I use Cloudron with Gandi & Hetzner

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      1
      • robiR Offline
        robiR Offline
        robi
        wrote on last edited by
        #3

        Your ISP/VPS Provider for your Cloudron host needs to set the PTR by your request.

        Conscious tech

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        • girishG girish marked this topic as a question on
        • A Offline
          A Offline
          AartJansen
          wrote on last edited by
          #4

          the PTR record is correct.
          Externally it resolves correctly.
          Only the cloudron server says it doesn't.

          robiR 1 Reply Last reply
          1
          • A AartJansen

            the PTR record is correct.
            Externally it resolves correctly.
            Only the cloudron server says it doesn't.

            robiR Offline
            robiR Offline
            robi
            wrote on last edited by
            #5

            @AartJansen then it may not have propagated if the change is recent. Just refresh the test again tomorrow.

            Conscious tech

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            0
            • girishG Offline
              girishG Offline
              girish
              Staff
              wrote on last edited by
              #6

              You can restart unbound in Services and check if it helps solve the problem? After restart, try host -t PTR <ip address> 127.0.0.1.

              A 1 Reply Last reply
              1
              • girishG girish

                You can restart unbound in Services and check if it helps solve the problem? After restart, try host -t PTR <ip address> 127.0.0.1.

                A Offline
                A Offline
                AartJansen
                wrote on last edited by
                #7

                @girish said in PTR record reports being set wrong:

                host -t PTR <public ip> 127.0.0.1

                The result comes back as domain name pointer nextcloud.domain, not my.domain (I had restarted the unbound service first)

                I wonder, I recently removed roundcube (my first app) and use sogo instead. (using sogo.domain)
                I didn't use a custom prefix for roundcube, so it had my.domain the second app I installed was nextcloud, and I added that custom domain name of nextcloud.domain

                Could that action have upset its own DNS records?

                girishG 1 Reply Last reply
                0
                • A AartJansen

                  @girish said in PTR record reports being set wrong:

                  host -t PTR <public ip> 127.0.0.1

                  The result comes back as domain name pointer nextcloud.domain, not my.domain (I had restarted the unbound service first)

                  I wonder, I recently removed roundcube (my first app) and use sogo instead. (using sogo.domain)
                  I didn't use a custom prefix for roundcube, so it had my.domain the second app I installed was nextcloud, and I added that custom domain name of nextcloud.domain

                  Could that action have upset its own DNS records?

                  girishG Offline
                  girishG Offline
                  girish
                  Staff
                  wrote on last edited by girish
                  #8

                  @AartJansen PTR records are not set in the DNS. They are set in your VPS Provider. Please see https://docs.cloudron.io/email/#ptr-record . It's not related to adding/removing apps. Cloudron has no automation (and indeed it's impossible) for setting and changing PTR records.

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                  0
                  • A Offline
                    A Offline
                    AartJansen
                    wrote on last edited by
                    #9

                    Except if I test the PTR record it reports correctly, only the cloudron server itself is misreporting the result.
                    https://mxtoolbox.com/SuperTool.aspx using PTR tool says the DNS name is my.domain.

                    girishG 1 Reply Last reply
                    0
                    • A AartJansen

                      Except if I test the PTR record it reports correctly, only the cloudron server itself is misreporting the result.
                      https://mxtoolbox.com/SuperTool.aspx using PTR tool says the DNS name is my.domain.

                      girishG Offline
                      girishG Offline
                      girish
                      Staff
                      wrote on last edited by
                      #10

                      @AartJansen that's good to know. Can you check what host -t PTR <public ip> 8.8.8.8 reports on the server? This is querying the google DNS.

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                      0
                      • A Offline
                        A Offline
                        AartJansen
                        wrote on last edited by
                        #11

                        thats also coming back as the wrong result.

                        girishG 1 Reply Last reply
                        0
                        • A AartJansen

                          thats also coming back as the wrong result.

                          girishG Offline
                          girishG Offline
                          girish
                          Staff
                          wrote on last edited by
                          #12

                          @AartJansen you can check in https://dnschecker.org/ if the PTR record has propagated properly . Otherwise, if you can send me IP address to support@cloudron.io, I can check what we see here. Most likely you have to ask your VPS provider why the name is reverse resolving properly.

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                          • A Offline
                            A Offline
                            AartJansen
                            wrote on last edited by AartJansen
                            #13

                            its self hosted, and my ISP set it a long time ago. when I use that site to view my PTR for the IP, all come up as green (and the correct domain) except sitehost in auckland NZ (which is oddly the closest geographically to me). its a red cross.

                            girishG 1 Reply Last reply
                            0
                            • A AartJansen

                              its self hosted, and my ISP set it a long time ago. when I use that site to view my PTR for the IP, all come up as green (and the correct domain) except sitehost in auckland NZ (which is oddly the closest geographically to me). its a red cross.

                              girishG Offline
                              girishG Offline
                              girish
                              Staff
                              wrote on last edited by
                              #14

                              @AartJansen I can confirm that the PTR looks correct from here. Not sure why your unbound is not resolving it properly. Have you added any additional configs in unbound? If not, can you write to us at support@cloudron.io and we can debug as to why it's not correct.

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                              1
                              • A Offline
                                A Offline
                                AartJansen
                                wrote on last edited by
                                #15

                                No I don't have anything customized in unbound, have sent an email.

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                                • girishG Offline
                                  girishG Offline
                                  girish
                                  Staff
                                  wrote on last edited by
                                  #16

                                  This was resolved in support. There was a static DNS record on the local router.

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                                  • girishG girish has marked this topic as solved on
                                  • A Offline
                                    A Offline
                                    AartJansen
                                    wrote on last edited by
                                    #17

                                    It's kind of odd, that rules been there for many months, I don't remember the exact issue I had that caused me to add it. Which could either be the problem was fixed by it, and will return (I guess that will remind me what it fixed), or it fixed nothing, and I forgot to undo it.
                                    Still pretty strange that it started DNS problems so much later.

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                                    0
                                    • A Offline
                                      A Offline
                                      AartJansen
                                      wrote on last edited by
                                      #18

                                      Umm, its happening again.

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                                      0
                                      • girishG Offline
                                        girishG Offline
                                        girish
                                        Staff
                                        wrote on last edited by
                                        #19

                                        I would test the DNS resolution from other computers in the network. This is happening outside of Cloudron.

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                                        0
                                        • A Offline
                                          A Offline
                                          AartJansen
                                          wrote on last edited by
                                          #20

                                          it just went away, i think the router had a DNS cache thats flushed now. It's no longer being set as the DNS server via DHCP, so I think its resolved.

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