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    Setup DKIM with Exchange 2013/2016 Inhouse Server

    IT Discussion
    dkim microsoft exchange server 2016 windows server 2016 dkim-exchange dmarc dns windows server
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    • dbeatoD
      dbeato @akpeelo
      last edited by

      @akpeelo Can you do an nslookup of the record and see if you get information back on the lookup?

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      • A
        akpeelo @dbeato
        last edited by

        @dbeato do you mean perform nslookup on the selector? NB: if i use online tools such as https://dmarcian.com to check the record, it fails automatically. but if i enter the selector i used in the DKIM software on my server, it passes the check in the online tool.

        A 1 Reply Last reply Reply Quote 0
        • A
          akpeelo @akpeelo
          last edited by

          @akpeelo Please can someone help out?

          V dbeatoD 2 Replies Last reply Reply Quote 0
          • V
            VoIP_n00b @akpeelo
            last edited by

            @akpeelo https://github.com/Pro/dkim-exchange/issues

            1 Reply Last reply Reply Quote -1
            • dbeatoD
              dbeato @akpeelo
              last edited by

              @akpeelo said in Setup DKIM with Exchange 2013/2016 Inhouse Server:

              @akpeelo Please can someone help out?

              Check this
              https://github.com/Pro/dkim-exchange/issues/342

              Also can you actually show your error, it is kind of hard to help without seeing what you see?

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              • A
                akpeelo @dbeato
                last edited by

                @dbeato ![alt text](DKIM.jpg image url).

                dbeatoD 1 Reply Last reply Reply Quote 0
                • dbeatoD
                  dbeato @akpeelo
                  last edited by

                  @akpeelo What is the DNS record that you added for adraghana.org?

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                    akpeelo @dbeato
                    last edited by

                    @dbeato i added a TXT record and in the txt record, i added the Suggested Name as the host=20211509._domainkey and then added the Suggested DNS record =v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAjddh3bmEvLbFI6cp60ZTEQJo4et80bPMhJ1OV5mVSOJl8w2hQL8EBzKISDNDxk9S6e7AiVTNNeYDu6mnxpacvlfsBEb5Pg1ZHqCiojf01XS4hbgvDLeHxsX2L11cYiYICQUQtVIzY0NHKZ2wN8bo2DkP+U10rb+KCTOeVi1jkeQHi+X5jp8NbiS/o4N0IFAzX7RP055oTvq8pBPtFI63IehSOsFndj3Cq6jBl0Oqb3R8lrKtih4tpK64HZwHTJWOR642MYVS4tiP5uAQTtaVQsnK81vW4lVGJDeLjiqLJI1B/m1mLatyJTM/FvlDCq1J2Y39Gv11uJz2Di0WsFH9xwIDAQAB as the value.

                    dbeatoD 1 Reply Last reply Reply Quote 0
                    • dbeatoD
                      dbeato @akpeelo
                      last edited by

                      @akpeelo said in Setup DKIM with Exchange 2013/2016 Inhouse Server:

                      @dbeato i added a TXT record and in the txt record, i added the Suggested Name as the host=20211509._domainkey and then added the Suggested DNS record =v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAjddh3bmEvLbFI6cp60ZTEQJo4et80bPMhJ1OV5mVSOJl8w2hQL8EBzKISDNDxk9S6e7AiVTNNeYDu6mnxpacvlfsBEb5Pg1ZHqCiojf01XS4hbgvDLeHxsX2L11cYiYICQUQtVIzY0NHKZ2wN8bo2DkP+U10rb+KCTOeVi1jkeQHi+X5jp8NbiS/o4N0IFAzX7RP055oTvq8pBPtFI63IehSOsFndj3Cq6jBl0Oqb3R8lrKtih4tpK64HZwHTJWOR642MYVS4tiP5uAQTtaVQsnK81vW4lVGJDeLjiqLJI1B/m1mLatyJTM/FvlDCq1J2Y39Gv11uJz2Di0WsFH9xwIDAQAB as the value.

                      It is correct as below

                      94b97c23-0e41-4dbc-b0ae-e46eb0e8fd7d-image.png

                      So basically the issues is on the DKIM application but your messages are signed properly.

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                      • A
                        akpeelo @dbeato
                        last edited by

                        @dbeato so what should my next step be?

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                        • T
                          Teece @dbeato
                          last edited by

                          @dbeato step 4 is wrong. The DKIM signer needs to be at the BOTTOM of this list, so it runs last. Otherwise, other transport agents may modify the message, which would render the signatures generated by the signer invalid.

                          dbeatoD 1 Reply Last reply Reply Quote 0
                          • dbeatoD
                            dbeato @Teece
                            last edited by

                            @teece I haven't seen that happened ever, no other transport rules modified the DKIM at all.

                            1 Reply Last reply Reply Quote 0
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