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  3. send e-mails through a port other than 25 (mainly through port 587)

send e-mails through a port other than 25 (mainly through port 587)

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portchangestmpemailport 25
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    • Z Offline
      Z Offline
      zedomingues
      wrote on last edited by
      #1

      considering that the whole world considers port 25 to be a less secure and more spam-friendly port, is there any way to configure my installation to send emails through port 587?

      tks

      murgeroM micmcM 2 Replies Last reply
      0
      • Z zedomingues

        considering that the whole world considers port 25 to be a less secure and more spam-friendly port, is there any way to configure my installation to send emails through port 587?

        tks

        murgeroM Offline
        murgeroM Offline
        murgero
        App Dev
        wrote on last edited by
        #2

        @zedomingues 587 is only for clients, not servers. port 25 supports the same encryption algorithms that 587 uses so it's just as secure (when it's told to do so).

        Port 25 is mainly used for server-to-server communication and it will always need to be that way according to the RFC for SMTP.

        --
        https://urgero.org
        ~ Professional Nerd. Freelance Programmer. ~

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        • Z zedomingues

          considering that the whole world considers port 25 to be a less secure and more spam-friendly port, is there any way to configure my installation to send emails through port 587?

          tks

          micmcM Offline
          micmcM Offline
          micmc
          wrote on last edited by
          #3

          @zedomingues said in send e-mails through a port other than 25 (mainly through port 587):

          considering that the whole world considers port 25 to be a less secure and more spam-friendly port, is there any way to configure my installation to send emails through port 587?

          tks

          The "consideration" of port 25 by the whole world is because it's been the port of choice since the invention of the simple mail transport protocol, SMTP, meaning this is how it works since the beginnings of this technology, before it even was known as "The Internet", and at that MOST EMAIL CLIENTS are set by default to use port 25 for email sending protocol (SMTP), thus not a server-to-server- only communication protocol.

          The use of port 587 for SMTP sever would be to use with SSL and/or TLS encryption and would be much easier to set as is, if you will, if you use an email marketing software from your server (which would allow you to use port 587 as a secured sending port) and / or if you set your SMTP using a third party as AWS SES or SendGrid or Mailchimp or any in the like.

          Regards,
          Andy

          Ignorance is not an excuse anymore!
          https://AutomateKit.com

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          • Z Offline
            Z Offline
            zedomingues
            wrote on last edited by
            #4

            thanks for the explanations. I have already contacted digital ocean requesting the release of port 25.

            at first, strangely, they claimed that there is no output block on port 25 (although I did the test with the command 'telnet' in the cli).

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