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--- linux:debian:postfix [2024/06/21 10:16] – created gsys
+++ linux:debian:postfix [2024/06/21 18:28] (current) – [Smarthost] gsys
@@ Line 1: / Line 1: @@
 ====== Postfix auf Debian ======
+===== Befehle =====
+<code>
+mailq
+less /var/log/mail.log
+postsuper -d ALL
+postsuper -d <ID>
+systemctl restart postfix
+</code>
+===== Installation =====
+<code>
+apt update
+apt install postfix
+apt install postfix libsasl2-modules          # relay mit smtp auth
+</code>
+===== Konfiguration =====
+==== Sender Mapping ====
+''/etc/postfix/main.cf''
+<code>
+sender_canonical_maps = hash:/etc/postfix/sender_canonical
+</code>
+''/etc/postfix/sender_canonical''
+<code>
+root    root@host.example.org
+</code>
+<code>
+chmod 600 /etc/postfix/sender_canonical
+postmap /etc/postfix/sender_canonical
+</code>
+==== Smarthost ====
+If not already installed:
+<code>
+apt install libsasl2-modules
+</code>
+''/etc/postfix/main.cf''
+<code>
+relayhost = [smtp.example.com]:587
+smtp_sasl_auth_enable = yes
+smtp_sasl_password_maps = hash:/etc/postfix/relay_pass
+smtp_sasl_security_options = noanonymous
+smtp_use_tls=yes
+smtp_tls_security_level = encrypt
+</code>
+''/etc/postfix/relay_pass''
+<code>
+[smtp.example.com]:587 user@example.com:password
+</code>
+<code>
+chmod 600 /etc/postfix/relay_pass
+postmap /etc/postfix/relay_pass
+</code>
+===== Test =====
+<code>
+apt install mailutils
+</code>
+<code>
+echo "Test" | mail -s "Test mx01" test@example.com
+</code>
+<code>
+openssl s_client -connect mx01.example.org:587 -starttls smtp
+</code>