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    Unsolved O365 Outbound email issue

    IT Discussion
    o365 office 365 exchange online email cert certificate certificate authority
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    • JaredBuschJ
      JaredBusch @JasGot
      last edited by

      @JasGot said in O365 Outbound email issue:

      Take at look at the certs using this. The cert for your vendor, not you.

      https://www.checktls.com/TestReceiver

      See if it shows a hint.

      Like a problem with the cert or their root or intermediate cert. Or even, the wrong cert.

      I had never heard of that site.. That is fucking awesome..

      And proves there is a self signed cert. but that does not explain why MS still cares..
      2bef4ccb-0e96-4cca-abdb-604fa6585e2e-image.png

      scottalanmillerS J 2 Replies Last reply Reply Quote 0
      • DashrenderD
        Dashrender
        last edited by

        61ad90e7-cc80-45f0-ac8c-94226bbe9e53-image.png

        This is why, MS killed TLS v1. I think v1.1 was also killed.

        JaredBuschJ 1 Reply Last reply Reply Quote 0
        • DashrenderD
          Dashrender
          last edited by

          06b5b9af-a642-4634-baff-2479d5380532-image.png https://blogs.perficient.com/2019/07/24/office-365-is-retiring-tls-1-0-and-1-1-why-you-should-care/

          1 Reply Last reply Reply Quote 0
          • scottalanmillerS
            scottalanmiller @JaredBusch
            last edited by

            @JaredBusch we use it a lot, I seem to do SO many cert tasks these days, Ugh.

            DashrenderD 1 Reply Last reply Reply Quote 0
            • JaredBuschJ
              JaredBusch @Dashrender
              last edited by JaredBusch

              @Dashrender said in O365 Outbound email issue:

              61ad90e7-cc80-45f0-ac8c-94226bbe9e53-image.png

              This is why, MS killed TLS v1. I think v1.1 was also killed.

              That is not the problem. TLSv1 for SMTP works fine.

              Nothing that Microsoft has posted affects SMTP. it affects connectivity to Office 365 form your browsers and apps.

              1 Reply Last reply Reply Quote 0
              • DashrenderD
                Dashrender @scottalanmiller
                last edited by

                @scottalanmiller said in O365 Outbound email issue:

                @JaredBusch we use it a lot, I seem to do SO many cert tasks these days, Ugh.

                can you add the cert tag to this post?

                Or do we need a new thread with just that site in the OP to tag?

                1 Reply Last reply Reply Quote 0
                • J
                  JasGot @JaredBusch
                  last edited by

                  @JaredBusch said in O365 Outbound email issue:

                  I had never heard of that site.. That is fucking awesome..

                  Glad you like it! It helps identify SO MANY issues.... 🙂

                  1 Reply Last reply Reply Quote 0
                  • JaredBuschJ
                    JaredBusch
                    last edited by

                    For the record, even though I made the above connector and it failed to verify, I did save the connector. Apparently, that was enough as email is sending now.

                    DashrenderD 1 Reply Last reply Reply Quote 1
                    • DashrenderD
                      Dashrender @JaredBusch
                      last edited by

                      @JaredBusch said in O365 Outbound email issue:

                      For the record, even though I made the above connector and it failed to verify, I did save the connector. Apparently, that was enough as email is sending now.

                      So which connector is solving this - the TLS regardless of cert condition, or the No-TLS

                      JaredBuschJ 1 Reply Last reply Reply Quote 0
                      • JaredBuschJ
                        JaredBusch @Dashrender
                        last edited by

                        @Dashrender said in O365 Outbound email issue:

                        @JaredBusch said in O365 Outbound email issue:

                        For the record, even though I made the above connector and it failed to verify, I did save the connector. Apparently, that was enough as email is sending now.

                        So which connector is solving this - the TLS regardless of cert condition, or the No-TLS

                        I only left the TLS regardless of cert, so it has to be that one.

                        1 Reply Last reply Reply Quote 0
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