97 lines
4.7 KiB
Bash
97 lines
4.7 KiB
Bash
#!/usr/bin/env bash
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set -euo pipefail
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source ./lib.sh
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MAIL_SSL_DIR="/etc/ssl/mail"
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MAIL_CERT="${MAIL_SSL_DIR}/fullchain.pem"
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MAIL_KEY="${MAIL_SSL_DIR}/privkey.pem"
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log "Postfix konfigurieren …"
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# --- Sicherheit & TLS-Rechte ---------------------------------------------------
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if [[ -e "${MAIL_KEY}" ]]; then
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chgrp -R postfix /etc/mailwolt/ssl || true
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chmod 750 /etc/mailwolt/ssl || true
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chmod 640 /etc/mailwolt/ssl/key.pem /etc/mailwolt/ssl/cert.pem || true
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fi
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# --- Basiskonfiguration --------------------------------------------------------
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/usr/sbin/postconf -e "myhostname = ${MAIL_HOSTNAME}"
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/usr/sbin/postconf -e "myorigin = \$myhostname"
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/usr/sbin/postconf -e "mydestination = "
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/usr/sbin/postconf -e "inet_interfaces = all"
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/usr/sbin/postconf -e "inet_protocols = ipv4"
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/usr/sbin/postconf -e "smtpd_banner = \$myhostname ESMTP"
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# --- TLS ----------------------------------------------------------------------
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/usr/sbin/postconf -e "smtpd_tls_cert_file = ${MAIL_CERT}"
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/usr/sbin/postconf -e "smtpd_tls_key_file = ${MAIL_KEY}"
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/usr/sbin/postconf -e "smtpd_tls_security_level = may"
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/usr/sbin/postconf -e "smtp_tls_security_level = may"
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/usr/sbin/postconf -e "smtpd_tls_received_header = yes"
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/usr/sbin/postconf -e "smtpd_tls_protocols = !SSLv2,!SSLv3"
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/usr/sbin/postconf -e "smtpd_tls_mandatory_protocols = !SSLv2,!SSLv3"
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/usr/sbin/postconf -e "smtpd_tls_loglevel = 1"
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/usr/sbin/postconf -e "smtp_tls_loglevel = 1"
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# --- SMTP Sicherheit ----------------------------------------------------------
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/usr/sbin/postconf -e "disable_vrfy_command = yes"
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/usr/sbin/postconf -e "smtpd_helo_required = yes"
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# --- Milter -------------------------------------------------------------------
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/usr/sbin/postconf -e "milter_default_action = accept"
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/usr/sbin/postconf -e "milter_protocol = 6"
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/usr/sbin/postconf -e "smtpd_milters = inet:127.0.0.1:11332, inet:127.0.0.1:8891"
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/usr/sbin/postconf -e "non_smtpd_milters = inet:127.0.0.1:11332, inet:127.0.0.1:8891"
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# --- SASL Auth via Dovecot ----------------------------------------------------
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/usr/sbin/postconf -e "smtpd_sasl_type = dovecot"
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/usr/sbin/postconf -e "smtpd_sasl_path = private/auth"
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/usr/sbin/postconf -e "smtpd_sasl_auth_enable = yes"
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/usr/sbin/postconf -e "smtpd_sasl_security_options = noanonymous"
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# --- Recipient & Relay Restriction --------------------------------------------
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/usr/sbin/postconf -e "smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination"
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/usr/sbin/postconf -e "smtpd_relay_restrictions = permit_mynetworks, reject_unauth_destination"
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# --- Listener / Master.cf Definition ------------------------------------------
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/usr/sbin/postconf -M "smtp/inet=smtp inet n - n - - smtpd -o smtpd_peername_lookup=no -o smtpd_timeout=30s"
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/usr/sbin/postconf -M "submission/inet=submission inet n - n - - smtpd -o syslog_name=postfix/submission -o smtpd_peername_lookup=no -o smtpd_tls_security_level=encrypt -o smtpd_tls_auth_only=yes -o smtpd_sasl_auth_enable=yes -o smtpd_relay_restrictions=permit_sasl_authenticated,reject -o smtpd_recipient_restrictions=permit_sasl_authenticated,reject"
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/usr/sbin/postconf -M "smtps/inet=smtps inet n - n - - smtpd -o syslog_name=postfix/smtps -o smtpd_peername_lookup=no -o smtpd_tls_wrappermode=yes -o smtpd_tls_auth_only=yes -o smtpd_sasl_auth_enable=yes -o smtpd_relay_restrictions=permit_sasl_authenticated,reject -o smtpd_recipient_restrictions=permit_sasl_authenticated,reject"
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# postscreen ggf. deaktivieren (verhindert Port-Konflikte)
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sed -i 's/^[[:space:]]*smtp[[:space:]]\+inet[[:space:]]\+.*postscreen/# &/' /etc/postfix/master.cf || true
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# --- SQL Maps -----------------------------------------------------------------
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install -d -o root -g postfix -m 750 /etc/postfix/sql
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cat > /etc/postfix/sql/mysql-virtual-mailbox-maps.cf <<CONF
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hosts = 127.0.0.1
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user = ${DB_USER}
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password = ${DB_PASS}
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dbname = ${DB_NAME}
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query = SELECT 1
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FROM mail_users u
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JOIN domains d ON d.id = u.domain_id
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WHERE u.email = '%s' AND u.is_active = 1 AND d.is_active = 1
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LIMIT 1;
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CONF
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chown root:postfix /etc/postfix/sql/mysql-virtual-mailbox-maps.cf
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chmod 640 /etc/postfix/sql/mysql-virtual-mailbox-maps.cf
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cat > /etc/postfix/sql/mysql-virtual-alias-maps.cf <<CONF
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hosts = 127.0.0.1
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user = ${DB_USER}
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password = ${DB_PASS}
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dbname = ${DB_NAME}
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query = SELECT destination
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FROM mail_aliases a
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JOIN domains d ON d.id = a.domain_id
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WHERE a.source = '%s' AND a.is_active = 1 AND d.is_active = 1
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LIMIT 1;
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CONF
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chown root:postfix /etc/postfix/sql/mysql-virtual-alias-maps.cf
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chmod 640 /etc/postfix/sql/mysql-virtual-alias-maps.cf
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# --- Aktivieren, Start erfolgt später durch 90-services.sh --------------------
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systemctl enable postfix >/dev/null 2>&1 || true |