docker exec plesk-test bash -c '
# Entferne alte submission-Konfiguration falls vorhanden
sed -i "/^submission/,/^[^ ]/{ /^submission/d; /^  -o/d; }" /etc/postfix/master.cf

# Neue Konfiguration mit Dovecot SASL hinzufügen
cat >> /etc/postfix/master.cf << EOF

# Submission Port 587 für STARTTLS
submission inet n       -       n       -       -       smtpd
  -o syslog_name=postfix/submission
  -o smtpd_tls_security_level=encrypt
  -o smtpd_sasl_auth_enable=yes
  -o smtpd_sasl_type=dovecot
  -o smtpd_sasl_path=/run/dovecot/auth-client
  -o smtpd_sasl_security_options=noanonymous
  -o smtpd_recipient_restrictions=permit_sasl_authenticated,reject
  -o smtpd_relay_restrictions=permit_sasl_authenticated,reject
EOF

postfix reload
echo "Done! Port 587 mit Dovecot SASL konfiguriert"
'