Christophs outsourced brain https://www.hackerbruecke.net/ Sun, 12 Apr 2026 15:05:29 +0000 FeedCreator 1.8 https://www.hackerbruecke.net/_media/wiki/favicon.ico https://www.hackerbruecke.net/ https://www.hackerbruecke.net/linux/email/postfix/relayhost?rev=1493132193&do=diff Postfix configuration for a relayhost (MX) / Anti-SPAM-/UCE-settings smtpd (smtp + daemon) = server = Postfix receives mail from a client smtp = client = Postfix sends mail to another mailserver used Ports: 10023/tcp: postgrey 10024/tcp: amavisd-new 10025/tcp: policyd-weight anonymous@undisclosed.example.com (Anonymous) Tue, 25 Apr 2017 14:56:33 +0000 https://www.hackerbruecke.net/linux/email/postfix/ssh-smtp-tunnel?rev=1493132228&do=diff SMTP-over-SSH-Tunnel Um zwei SMTP-Server (z.B. Mailserver im Heim-Netz zu Mailgateway bei Provider/Hoster) sicher miteinander zu verbinden, gibt es verschiedene Möglichkeiten. OpenVPN-Tunnel Eine Möglichkeit ist, ein OpenVPN-Tunnel zwischen beiden Servern. anonymous@undisclosed.example.com (Anonymous) Tue, 25 Apr 2017 14:57:08 +0000 https://www.hackerbruecke.net/linux/email/postfix/smtp-authentication?rev=1493132210&do=diff SMTPd- / SMTP-authentication SMTPd-authentication SASL must be configured! in /etc/postfix/main.cf: smtpd_sasl_auth_enable = yes smtpd_sasl_security_options = noanonymous broken_sasl_auth_clients = yes smtpd_recipient_restrictions = ... permit_sasl_authenticated anonymous@undisclosed.example.com (Anonymous) Tue, 25 Apr 2017 14:56:50 +0000