I have a raspberry pi running postfix. I Realised unless I open port 25 I absolutely cannot receive emails (I have 587 open and can send but not receive them). However I heard there are scaries online which someone could potentially send emails from your server without consent. I believe as well my ISP doesn’t block port 25. Is there anything I should do right now before opening port 25, or should everything be safe enough?

  • @[email protected]English
    8•7 months ago

    Not sure about you latter point tbh. I run an email server, with nothing but grey listing and spamassassin and the amount of spam is absolutely minimal.

    Proper config and fail2ban easily takes care of direct attacks.

    Nevertheless, I wouldn’t recommend it to anyone but the most determined.

    • @[email protected]English
      11•7 months ago

      To be fair, they said that you would need anti spam software and you do use anti spam software.