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  1. Cloudron Forum
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  3. PTR / Gmail

PTR / Gmail

Scheduled Pinned Locked Moved Solved Support
emailptr
10 Posts 4 Posters 1.2k Views 4 Watching
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    • timconsidineT Offline
      timconsidineT Offline
      timconsidine
      App Dev
      wrote on last edited by joseph
      #1

      Hope this is not a FAQ : I have checked what I can

      My Cloudron instance reports correct config (green tick) for domains in Cloudron for email setup.
      But Gmail has started rejecting inbound emails to gmail address as “not matching the sending domain”.

      Checking in MX Lookup also is fine.

      My Cloudron instance is on Hetzner, and seems ok (famous last words).

      How can I persuade Gmail that PTR is correct ?

      Sending from domains to other addresses works fine.

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      • timconsidineT Offline
        timconsidineT Offline
        timconsidine
        App Dev
        wrote on last edited by
        #2

        I guess thus might be relevant

        or the corresponding forward DNS entry does not match the sending IP

        Not understanding what extra DNS config needs to be setup

        jdaviescoatesJ 1 Reply Last reply
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        • timconsidineT timconsidine

          I guess thus might be relevant

          or the corresponding forward DNS entry does not match the sending IP

          Not understanding what extra DNS config needs to be setup

          jdaviescoatesJ Offline
          jdaviescoatesJ Offline
          jdaviescoates
          wrote on last edited by
          #3

          @timconsidine this is the post you are looking for:

          https://forum.cloudron.io/topic/13072/gmail-ipv6-anyone-else-with-this-experience/22?_=1737995758634

          Most likely you need to sort out your IPv6 PTR etc.

          I use Cloudron with Gandi & Hetzner

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          • timconsidineT Offline
            timconsidineT Offline
            timconsidine
            App Dev
            wrote on last edited by
            #4

            Thank you !
            I don’t use IPV6 but will check it out

            jdaviescoatesJ avatar1024A 2 Replies Last reply
            0
            • timconsidineT timconsidine

              Thank you !
              I don’t use IPV6 but will check it out

              jdaviescoatesJ Offline
              jdaviescoatesJ Offline
              jdaviescoates
              wrote on last edited by
              #5

              @timconsidine said in PTR / Gmail:

              I don’t use IPV6 but will check it out

              It seems that M$ and GOOG are forcing us all to do so if we want to email people who use their email services (which of course we all do as that's the vast majority of people).

              I use Cloudron with Gandi & Hetzner

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              • timconsidineT Offline
                timconsidineT Offline
                timconsidine
                App Dev
                wrote on last edited by
                #6

                Made changes, waiting for propagation before re-testing

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                • timconsidineT Offline
                  timconsidineT Offline
                  timconsidine
                  App Dev
                  wrote on last edited by
                  #7

                  Fingers crossed that’s working

                  Thank you again !

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                  • J joseph has marked this topic as solved on
                  • timconsidineT timconsidine

                    Thank you !
                    I don’t use IPV6 but will check it out

                    avatar1024A Offline
                    avatar1024A Offline
                    avatar1024
                    wrote on last edited by
                    #8

                    @timconsidine said in PTR / Gmail:

                    I don’t use IPV6 but will check it out

                    Even if you don't have IPv6 activated.on Cloudron but that your server network interface has IPv6 activated, then Google uses IPv6 for emails...it's confused a hell of a lot of us 😅

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                    • osoboO Offline
                      osoboO Offline
                      osobo
                      wrote on last edited by
                      #9

                      @timconsidine Was on the same boat. Pulled my hair off until I saw your post. Millions thanks

                      timconsidineT 1 Reply Last reply
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                      • osoboO osobo

                        @timconsidine Was on the same boat. Pulled my hair off until I saw your post. Millions thanks

                        timconsidineT Offline
                        timconsidineT Offline
                        timconsidine
                        App Dev
                        wrote on last edited by
                        #10

                        @osobo the power of the forum, thanks are due to @jdaviescoates and all those who went before on this issue.

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