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  3. Email is not configured properly

Email is not configured properly

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  • BrutalBirdieB BrutalBirdie

    There are now many post about mail and IPv6 included PTR.
    The forum search is a powerful tool 🙂

    You need to set the PTR Record for your IPv6 in your hoster.

    andreasduerenA Offline
    andreasduerenA Offline
    andreasdueren
    wrote on last edited by
    #3

    @BrutalBirdie to be fair though I have the PTR records set up for a long time now but for some reason I keep getting these errors lately too

    jdaviescoatesJ 1 Reply Last reply
    2
    • andreasduerenA andreasdueren

      @BrutalBirdie to be fair though I have the PTR records set up for a long time now but for some reason I keep getting these errors lately too

      jdaviescoatesJ Offline
      jdaviescoatesJ Offline
      jdaviescoates
      wrote on last edited by
      #4

      @andreasdueren I've intermittently got them a few times too.

      I use Cloudron with Gandi & Hetzner

      1 Reply Last reply
      2
      • nebulonN Offline
        nebulonN Offline
        nebulon
        Staff
        wrote on last edited by
        #5

        So the issue is that the PTR does not match the ipv6 or that it is intermittedly resolving to the wrong value or is there any other issue? If so more info would help to get down to it.

        andreasduerenA 1 Reply Last reply
        0
        • KubernetesK Online
          KubernetesK Online
          Kubernetes
          App Dev
          wrote on last edited by
          #6

          I also get this error message from time to time on my Cloudron on Hetzner VPS. Usually during night and when I check in the morning the issue does not exist anymore. Maybe it is an issue with DNS Lookup?

          jdaviescoatesJ 1 Reply Last reply
          4
          • nebulonN nebulon

            So the issue is that the PTR does not match the ipv6 or that it is intermittedly resolving to the wrong value or is there any other issue? If so more info would help to get down to it.

            andreasduerenA Offline
            andreasduerenA Offline
            andreasdueren
            wrote on last edited by
            #7

            @nebulon This is the error show:

            Email is not configured properly Yesterday
            secondarytld.com

            • PTR6 DNS record (PTR) did not match.
            • Hostname: null
            • Expected: mail.tld.com
            • Actual: null

            Email Status is checked every 30 minutes. See the troubleshooting docs for more information.**

            1 Reply Last reply
            2
            • robiR Offline
              robiR Offline
              robi
              wrote on last edited by
              #8

              What kind of intermittent maintenance could affect this?

              Conscious tech

              1 Reply Last reply
              0
              • KubernetesK Kubernetes

                I also get this error message from time to time on my Cloudron on Hetzner VPS. Usually during night and when I check in the morning the issue does not exist anymore. Maybe it is an issue with DNS Lookup?

                jdaviescoatesJ Offline
                jdaviescoatesJ Offline
                jdaviescoates
                wrote on last edited by jdaviescoates
                #9

                @Kubernetes said in Email is not configured properly:

                I also get this error message from time to time on my Cloudron on Hetzner VPS. Usually during night and when I check in the morning the issue does not exist anymore. Maybe it is an issue with DNS Lookup?

                Same (with a Hetzner dedicated server). I've had it maybe 3 or 4 times. Always around the same time in the early hours.

                I use Cloudron with Gandi & Hetzner

                1 Reply Last reply
                1
                • nebulonN Offline
                  nebulonN Offline
                  nebulon
                  Staff
                  wrote on last edited by
                  #10

                  Maybe you could contact Hetzner about this then, this is a bit out of scope for Cloudron, which only really does some sanitychecking here based on a PTR record check.

                  1 Reply Last reply
                  0
                  • nebulonN Offline
                    nebulonN Offline
                    nebulon
                    Staff
                    wrote on last edited by
                    #11

                    Just created a Hetzner server and maybe the IPv6 PTR issue is, that the default setting is :: while Cloudron checks for ::1 (or whatever you see in the status page) After adding a second PTR for IPv6 it started to work so far at least.

                    jdaviescoatesJ 1 Reply Last reply
                    1
                    • nebulonN nebulon

                      Just created a Hetzner server and maybe the IPv6 PTR issue is, that the default setting is :: while Cloudron checks for ::1 (or whatever you see in the status page) After adding a second PTR for IPv6 it started to work so far at least.

                      jdaviescoatesJ Offline
                      jdaviescoatesJ Offline
                      jdaviescoates
                      wrote on last edited by
                      #12

                      @nebulon given the intermittent and short term nature of the issue it could just be short term network stuff happening somewhere. Mostly it's fine.

                      I use Cloudron with Gandi & Hetzner

                      1 Reply Last reply
                      0
                      • GengarG Offline
                        GengarG Offline
                        Gengar
                        wrote on last edited by Gengar
                        #13

                        @dynimighti who is your vps provider ?

                        Because there is a known issue in cloudron for VPS providers that are using DHCPv6, the lease will not be renewed because the traffic is not allowed on UDP port 546 (client) from port 547 (server) in Cloudron's default ip6tables ruleset. Based on RFC 8415 , this port needs to be explicitly opened for DHCPv6 to work correctly.

                        This issue will lead to PTR6 value = null ... simply because your ipv6 lease is not renewed and so you loose your ipv6...

                        You can find more information about the issue I'm talking about and a temporary fix here :
                        https://forum.cloudron.io/topic/13566/infomaniak-ipv6-issues/61?_=1745357068478

                        But if you are using Hetzner it shouldn't be the case because I did some tests and they are setting a fixed ipv6 address. It means you cannot loose your ipv6, so you shouldn't have the issue I'm talking about.

                        dynimightiD andreasduerenA 2 Replies Last reply
                        1
                        • GengarG Gengar

                          @dynimighti who is your vps provider ?

                          Because there is a known issue in cloudron for VPS providers that are using DHCPv6, the lease will not be renewed because the traffic is not allowed on UDP port 546 (client) from port 547 (server) in Cloudron's default ip6tables ruleset. Based on RFC 8415 , this port needs to be explicitly opened for DHCPv6 to work correctly.

                          This issue will lead to PTR6 value = null ... simply because your ipv6 lease is not renewed and so you loose your ipv6...

                          You can find more information about the issue I'm talking about and a temporary fix here :
                          https://forum.cloudron.io/topic/13566/infomaniak-ipv6-issues/61?_=1745357068478

                          But if you are using Hetzner it shouldn't be the case because I did some tests and they are setting a fixed ipv6 address. It means you cannot loose your ipv6, so you shouldn't have the issue I'm talking about.

                          dynimightiD Offline
                          dynimightiD Offline
                          dynimighti
                          wrote on last edited by
                          #14

                          @Gengar linode

                          GengarG 1 Reply Last reply
                          0
                          • GengarG Gengar

                            @dynimighti who is your vps provider ?

                            Because there is a known issue in cloudron for VPS providers that are using DHCPv6, the lease will not be renewed because the traffic is not allowed on UDP port 546 (client) from port 547 (server) in Cloudron's default ip6tables ruleset. Based on RFC 8415 , this port needs to be explicitly opened for DHCPv6 to work correctly.

                            This issue will lead to PTR6 value = null ... simply because your ipv6 lease is not renewed and so you loose your ipv6...

                            You can find more information about the issue I'm talking about and a temporary fix here :
                            https://forum.cloudron.io/topic/13566/infomaniak-ipv6-issues/61?_=1745357068478

                            But if you are using Hetzner it shouldn't be the case because I did some tests and they are setting a fixed ipv6 address. It means you cannot loose your ipv6, so you shouldn't have the issue I'm talking about.

                            andreasduerenA Offline
                            andreasduerenA Offline
                            andreasdueren
                            wrote on last edited by
                            #15

                            @Gengar Hetzner dedicated and virtual

                            GengarG 1 Reply Last reply
                            1
                            • dynimightiD dynimighti

                              @Gengar linode

                              GengarG Offline
                              GengarG Offline
                              Gengar
                              wrote on last edited by
                              #16

                              @dynimighti okay so if you read the content of your netplan yaml config file you will be able to see if dhcpv6 is enabled . If yes , then you need to use the fix in the link I’ve sent before.

                              1 Reply Last reply
                              1
                              • andreasduerenA andreasdueren

                                @Gengar Hetzner dedicated and virtual

                                GengarG Offline
                                GengarG Offline
                                Gengar
                                wrote on last edited by
                                #17

                                @andreasdueren I only tried with a virtual one at hetzner so idk for the dedicated . But for virtual it’s a fixed IPv6 and I also had my ptr to null one or two times on this one but it’s temporary and very quick. I think it should be a brief interruption with their dns or something network related .

                                jdaviescoatesJ 1 Reply Last reply
                                2
                                • GengarG Gengar

                                  @andreasdueren I only tried with a virtual one at hetzner so idk for the dedicated . But for virtual it’s a fixed IPv6 and I also had my ptr to null one or two times on this one but it’s temporary and very quick. I think it should be a brief interruption with their dns or something network related .

                                  jdaviescoatesJ Offline
                                  jdaviescoatesJ Offline
                                  jdaviescoates
                                  wrote on last edited by
                                  #18

                                  @Gengar said in Email is not configured properly:

                                  I think it should be a brief interruption with their dns or something network related .

                                  That's my current guess.

                                  I use Cloudron with Gandi & Hetzner

                                  1 Reply Last reply
                                  1
                                  • dynimightiD Offline
                                    dynimightiD Offline
                                    dynimighti
                                    wrote on last edited by dynimighti
                                    #19
                                    This post is deleted!
                                    1 Reply Last reply
                                    0
                                    • dynimightiD Offline
                                      dynimightiD Offline
                                      dynimighti
                                      wrote on last edited by
                                      #20

                                      @Gengar think that worked, thanks.

                                      GengarG 1 Reply Last reply
                                      3
                                      • dynimightiD dynimighti

                                        @Gengar think that worked, thanks.

                                        GengarG Offline
                                        GengarG Offline
                                        Gengar
                                        wrote on last edited by Gengar
                                        #21

                                        @dynimighti the only issue with the workaround is that you have to reapply it at each reboot of your server …

                                        @nebulon would it be possible to add the firewall rule specified in this post (link below) in cloudron to solve this issue with vps providers using dhcpv6 ?

                                        https://forum.cloudron.io/post/105840

                                        1 Reply Last reply
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                                        • J joseph has marked this topic as solved on
                                        • SansGuidonS Offline
                                          SansGuidonS Offline
                                          SansGuidon
                                          wrote on last edited by
                                          #22

                                          I had this issue for a long time with Cloudron, with both Hostinger and Hetzner as DNS/NS managers. I just check everytime those issues occur of course but I tend to just not trust anymore any Cloudron notifications for Emails config 😢

                                          About me / Now

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