Block PHP mail

Discussion in 'Tips/Tricks/Mods' started by Marcio Urakawa, Dec 17, 2020.

  1. I would like to know if there is a way to block the email sent through the hosted sites?

    There are several sites that are using the Ispconfig postfix to send spam.
    I would like only my email used in Ispconfig to send login to be used.
  2. Jesse Norell

    Jesse Norell ISPConfig Developer Staff Member ISPConfig Developer

  3. nhybgtvfr

    nhybgtvfr Active Member HowtoForge Supporter

    as an extra possible step, assuming you have a multi-server setup, since a compromised site might have it's one smtp sender installed, you could add an iptables rule to block any outbound connections with a destination of port 25, and force anything that wants to send mail from that server to use an authenticated email account.

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