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    If you have multiple servers on a network, do you install postfix on each one

    IT Discussion
    reality check linux postfix brrabill goes wild
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    • BRRABillB
      BRRABill
      last edited by

      So, in my attempt to just dummy down this whole thing.

      I was just saying if you send from dnf-automatic to public servers, it will not e-mail the server, be accepted by the server, and then delivered to your inbox without some work.

      So far, in using postfix, I have not had any of these issues. Install postifx, works perfectly.

      JaredBuschJ scottalanmillerS 2 Replies Last reply Reply Quote 0
      • JaredBuschJ
        JaredBusch @BRRABill
        last edited by

        @brrabill said in If you have multiple servers on a network, do you install postfix on each one:

        So, in my attempt to just dummy down this whole thing.

        I was just saying if you send from dnf-automatic to public servers, it will not e-mail the server, be accepted by the server, and then delivered to your inbox without some work.

        So far, in using postfix, I have not had any of these issues. Install postifx, works perfectly.

        /sigh FFS

        1 Reply Last reply Reply Quote 0
        • BRRABillB
          BRRABill @scottalanmiller
          last edited by

          @scottalanmiller said

          We've all been talking about email (SMTP), but @BRRABill is actually wanting to ask questions about post-email mailbox filtering and approval by specific hosted services vendors. Which is not really about email, but about working out how to identify SPAM after it has been received.

          Mixing those two concepts together as if they are one will always lead to massive confusion and a misinterpretation of events.

          Yes...

          I used the phrase "dnf cannot e-mail me at gmail"

          when the correct @scottalanmiller phrase is

          "dnf cannot email me at gmail, have it accepted by gmail, and then delivered into my inbox by gmail"

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

            @brrabill said in If you have multiple servers on a network, do you install postfix on each one:

            @scottalanmiller said

            We've all been talking about email (SMTP), but @BRRABill is actually wanting to ask questions about post-email mailbox filtering and approval by specific hosted services vendors. Which is not really about email, but about working out how to identify SPAM after it has been received.

            Mixing those two concepts together as if they are one will always lead to massive confusion and a misinterpretation of events.

            Yes...

            I used the phrase "dnf cannot e-mail me at gmail"

            when the correct @scottalanmiller phrase is

            "dnf cannot email me at gmail, have it accepted by gmail, and then delivered into my inbox by gmail"

            Of course it can. You need to stop saying things "can or can't" because we will FFS every one of those.

            Everything works. All of it. You just have to set it up to do so.

            BRRABillB DustinB3403D 2 Replies Last reply Reply Quote 0
            • scottalanmillerS
              scottalanmiller
              last edited by

              The reason postfix is working for you is because you are sending via postfix directly, postfix is the relay. Your dnf-automatic I'm guessing you have told GMail to be your relay but haven't worked this out with GMail. So they are denying you relay access.

              1 Reply Last reply Reply Quote 0
              • BRRABillB
                BRRABill @scottalanmiller
                last edited by

                @scottalanmiller said You need to stop saying things "can or can't" because we will FFS every one of those.

                Only one person here will. 🙂

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

                  @brrabill said in If you have multiple servers on a network, do you install postfix on each one:

                  So, in my attempt to just dummy down this whole thing.

                  I was just saying if you send from dnf-automatic to public servers, it will not e-mail the server, be accepted by the server, and then delivered to your inbox without some work.

                  dnf-automatic acts as a client, not an MTA, even though it has SMTP. So it is attaching to whatever server you are telling it is the relay and trying to relay through it. If you haven't told the server in question to accept relay access, it will fail. If you tell it to accept access, it will work.

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

                    Remember, Jared was telling you that with dnf-automatic that you still needed postfix, but not one postfix PER SERVER. Postfix is the relay that will work. If you want to send with zero postfix, then you need to get Google or whoever to be your relay and they have to agree to that.

                    The original thread is one postfix per network or one per server. If you use mailx, you need one per server. If you use dnf-automatic, you need one per network (but one per server works, too.) In both cases, GMail can't tell the difference.

                    1 Reply Last reply Reply Quote 0
                    • DustinB3403D
                      DustinB3403 @scottalanmiller
                      last edited by

                      @scottalanmiller said in If you have multiple servers on a network, do you install postfix on each one:

                      Everything works. All of it. You just have to set it up to do so.

                      Oh FFS, now we need to know blackmagic too!

                      JaredBuschJ 1 Reply Last reply Reply Quote 0
                      • JaredBuschJ
                        JaredBusch @DustinB3403
                        last edited by

                        @dustinb3403 said in If you have multiple servers on a network, do you install postfix on each one:

                        @scottalanmiller said in If you have multiple servers on a network, do you install postfix on each one:

                        Everything works. All of it. You just have to set it up to do so.

                        Oh FFS, now we need to know blackmagic too!

                        Always considered myself more of a red mage
                        0_1513633611584_4dba840c-e47b-4b2e-9443-de48f0f77f85-images.png

                        wirestyle22W 1 Reply Last reply Reply Quote 3
                        • wirestyle22W
                          wirestyle22 @JaredBusch
                          last edited by

                          @jaredbusch Lol. Spoken like a true IT generalist

                          1 Reply Last reply Reply Quote 0
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