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    Direct inquiry (forked topic)

    Scheduled Pinned Locked Moved Solved Xen Orchestra
    12 Posts 6 Posters 987 Views 2 Watching
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    • borzelB Offline
      borzel XCP-ng Center Team @Robert COLIN
      last edited by

      @Robert-COLIN it would be just fair to give at least an english summary of your post

      R 1 Reply Last reply Reply Quote 0
      • R Offline
        Robert COLIN @borzel
        last edited by

        @borzel .
        Is just I can't have contact with Olivier. Mail doesn't work. And I would like service from Vates company. I'm sorry to use this way but I tried by all that I can for one month. Sorry for disturbing this post.

        borzelB MajorTomM 2 Replies Last reply Reply Quote 0
        • stormiS Offline
          stormi Vates 🪐 XCP-ng Team
          last edited by

          I've forked the topic, since there was no reason to have this discussion on the original topic.

          1 Reply Last reply Reply Quote 0
          • olivierlambertO Online
            olivierlambert Vates 🪐 Co-Founder CEO
            last edited by

            I'll answer via private chat on the forum 🙂

            1 Reply Last reply Reply Quote 1
            • borzelB Offline
              borzel XCP-ng Center Team @Robert COLIN
              last edited by borzel

              @Robert-COLIN If you using a self build mail setup, check it first:
              550 - 550-Requested action not taken: mailbox unavailable
              550 invalid DNS MX or A/AAAA resource record

              Sounds like your mail server is not correctly resolving the vates DNS/MX entry. Did you check that on the mailserver?

              1 Reply Last reply Reply Quote 0
              • MajorTomM Offline
                MajorTom @Robert COLIN
                last edited by

                To vates.fr:

                Seems your DNS MX records are CNAMEs (aliases). They should not.

                $ host -t mx vates.fr
                vates.fr mail is handled by 50 smtp2.vates.fr.
                vates.fr mail is handled by 10 smtp1.vates.fr.
                
                $ host smtp1.vates.fr.
                smtp1.vates.fr is an alias for mail1.vates.fr.
                mail1.vates.fr has address 212.129.1.64
                
                $ host smtp2.vates.fr.
                smtp2.vates.fr is an alias for mail2.vates.fr.
                mail2.vates.fr has address 212.129.1.118
                
                $ host -a smtp1.vates.fr.
                [...]
                smtp1.vates.fr.         600     IN      CNAME   mail1.vates.fr.
                
                $ host -a smtp2.vates.fr.
                [...]
                smtp2.vates.fr.         600     IN      CNAME   mail2.vates.fr.
                

                This can be the reason that some mail servers don't deliver mail to you.

                See RFC 2181:

                "The domain name used as the value of a NS resource record, or part of
                the value of a MX resource record must not be an alias. Not only is
                the specification clear on this point, but using an alias in either
                of these positions neither works as well as might be hoped, nor well
                fulfills the ambition that may have led to this approach. This
                domain name must have as its value one or more address records.
                Currently those will be A records, however in the future other record
                types giving addressing information may be acceptable. It can also
                have other RRs, but never a CNAME RR.

                Searching for either NS or MX records causes "additional section
                processing" in which address records associated with the value of the
                record sought are appended to the answer. This helps avoid needless
                extra queries that are easily anticipated when the first was made.

                Additional section processing does not include CNAME records, let
                alone the address records that may be associated with the canonical
                name derived from the alias. Thus, if an alias is used as the value
                of an NS or MX record, no address will be returned with the NS or MX
                value. This can cause extra queries, and extra network burden, on
                every query. It is trivial for the DNS administrator to avoid this
                by resolving the alias and placing the canonical name directly in the
                affected record just once when it is updated or installed. In some
                particular hard cases the lack of the additional section address
                records in the results of a NS lookup can cause the request to fail."

                borzelB R 2 Replies Last reply Reply Quote 0
                • julien-fJ Offline
                  julien-f Vates 🪐 Co-Founder XO Team
                  last edited by

                  Thank you for your help, we have removed smtp2 which did not exist and changed smtp1 to be an A record instead of CNAME 🙂

                  1 Reply Last reply Reply Quote 0
                  • borzelB Offline
                    borzel XCP-ng Center Team @MajorTom
                    last edited by

                    @MajorTom cool 🙂

                    MajorTomM 1 Reply Last reply Reply Quote 0
                    • MajorTomM Offline
                      MajorTom @borzel
                      last edited by

                      You're welcome!
                      I'm happy I could help a little. I'm grateful for XCP-ng! 🙂

                      1 Reply Last reply Reply Quote 1
                      • R Offline
                        Robert COLIN @MajorTom
                        last edited by

                        @MajorTom Thank you now I can send mail to Vates. Thanks julien-f too.

                        MajorTomM 1 Reply Last reply Reply Quote 0
                        • MajorTomM Offline
                          MajorTom @Robert COLIN
                          last edited by

                          @Robert-COLIN That's great! Good luck :-).

                          1 Reply Last reply Reply Quote 0
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