Postfix/Dovecot ohne LDAP

Postfix

/etc/postfix/master.cf anfügen

smtps     inet  n       -       y       -       -       smtpd
  -o smtpd_tls_wrappermode=yes
  -o smtpd_sasl_auth_enable=yes
  -o smtpd_relay_restrictions=permit_sasl_authenticated,reject

/etc/postfix/main.cf anfügen

smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
biff = no
append_dot_mydomain = no
readme_directory = no
maillog_file = /var/log/mail.log

# TLS-Einstellungen
smtpd_tls_cert_file = /etc/ssl/certs/star.lab34.linuggs.de.crt
smtpd_tls_key_file = /etc/ssl/private/star.lab34.linuggs.de.key
smtpd_tls_security_level = may
smtpd_tls_received_header = yes
smtp_tls_CApath = /etc/ssl/certs
smtp_tls_security_level = may
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache

# SMTP-Einstellungen
#smtpd_relay_restrictions = permit_mynetworks, permit_sasl_authenticated, defer_unauth_destination
myhostname = mail.lab34.linuggs.de
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = $myhostname, localhost.localdomain, localhost, lab34.linuggs.de
relayhost =
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = all


# SASL-Authentifizierung mit Dovecot
smtpd_sasl_auth_enable = yes
smtpd_sasl_type = dovecot
smtpd_sasl_path = private/auth
smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination

Dovecot

Dovecot-Konfiguration für SASL und TLS auf Port 993

Dovecot-Konfiguration

• Öffne die Datei /etc/dovecot/conf.d/10-ssl.conf und füge hinzu:

ssl = yes
ssl_cert = </etc/ssl/certs/star.lab34.linuggs.de.crt
ssl_key = </etc/ssl/private/star.lab34.linuggs.de.key

Mail Location

• Öffne die Datei /etc/dovecot/conf.d/10-mail.conf und stelle sicher, dass folgende Zeile vorhanden ist:

mail_location = mbox:~/mbox:INBOX=/var/mail/%u

Authentifizierung

• Öffne die Datei /etc/dovecot/conf.d/10-auth.conf und füge hinzu:

auth_mechanisms = plain login

Master-Konfiguration

• Öffne die Datei /etc/dovecot/conf.d/10-master.conf und füge hinzu:

service auth {
  unix_listener /var/spool/postfix/private/auth {
    mode = 0666
    user = postfix
    group = postfix
  }
}

Dienste neu starten

• Starte Dovecot und Postfix neu:

sudo systemctl restart dovecot postfix