134 lines
6.7 KiB
Bash
134 lines
6.7 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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# --- TLS-Dateirechte (falls du sie in /etc/mailwolt/ssl spiegelst) -----------
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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 = all"
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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 = ${MAIL_KEY}"
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/usr/sbin/postconf -e "smtpd_tls_security_level = may"
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/usr/sbin/postconf -e "smtpd_use_tls = yes"
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/usr/sbin/postconf -e "smtpd_tls_received_header = yes"
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/usr/sbin/postconf -e "smtpd_tls_protocols = !SSLv2,!SSLv3"
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/usr/sbin/postconf -e "smtpd_tls_mandatory_protocols = !SSLv2,!SSLv3"
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/usr/sbin/postconf -e "smtpd_tls_loglevel = 1"
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/usr/sbin/postconf -e "smtp_tls_security_level = may"
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/usr/sbin/postconf -e "smtp_tls_loglevel = 1"
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DH_FILE="/etc/ssl/private/dhparam.pem"
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if [[ ! -s "$DH_FILE" ]]; then
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log "Generiere 2048-Bit DH-Parameter …"
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openssl dhparam -out "$DH_FILE" 2048
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chmod 600 "$DH_FILE"
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chown root:root "$DH_FILE"
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fi
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/usr/sbin/postconf -e "smtpd_tls_dh1024_param_file = ${DH_FILE}"
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/usr/sbin/postconf -e "smtpd_tls_dh1024_param_file = ${DH_FILE}"
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/usr/sbin/postconf -e "smtpd_tls_eecdh_grade = strong"
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/usr/sbin/postconf -e "tls_preempt_cipherlist = yes"
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# Nur moderne TLS-Versionen (auch für ausgehendes SMTP)
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# (überschreibt die älteren Zeilen oben)
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/usr/sbin/postconf -e "smtpd_tls_protocols = !SSLv2,!SSLv3,!TLSv1,!TLSv1.1"
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/usr/sbin/postconf -e "smtpd_tls_mandatory_protocols = !SSLv2,!SSLv3,!TLSv1,!TLSv1.1"
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/usr/sbin/postconf -e "smtp_tls_protocols = !SSLv2,!SSLv3,!TLSv1,!TLSv1.1"
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# Hohe Cipher, alte raus
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/usr/sbin/postconf -e "smtpd_tls_ciphers = high"
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/usr/sbin/postconf -e "smtp_tls_ciphers = high"
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/usr/sbin/postconf -e "smtpd_tls_exclude_ciphers = aNULL,eNULL,MD5,RC4,DES,3DES"
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/usr/sbin/postconf -e "smtp_tls_exclude_ciphers = aNULL,eNULL,MD5,RC4,DES,3DES"
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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
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sed -i 's/^[[:space:]]*smtp[[:space:]]\+inet[[:space:]]\+.*postscreen/# &/' /etc/postfix/master.cf || true
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# --- SQL Maps (Verzeichnis zuerst!) -------------------------------------------
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install -d -o root -g postfix -m 750 /etc/postfix/sql
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# Domains
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cat > /etc/postfix/sql/mysql-virtual-domains.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 FROM domains WHERE domain = '%s' AND is_active = 1 LIMIT 1;
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CONF
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chown root:postfix /etc/postfix/sql/mysql-virtual-domains.cf
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chmod 640 /etc/postfix/sql/mysql-virtual-domains.cf
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# Mailboxen
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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 FROM mail_users u JOIN domains d ON d.id = u.domain_id WHERE u.email = '%s' AND u.is_active = 1 AND u.can_login = 1 AND u.password_hash IS NOT NULL AND d.is_active = 1 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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# Aliase
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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 COALESCE(mu.email, r.email) AS destination FROM mail_aliases a JOIN domains d ON d.id = a.domain_id JOIN mail_alias_recipients r ON r.alias_id = a.id LEFT JOIN mail_users mu ON mu.id = r.mail_user_id WHERE d.domain = SUBSTRING_INDEX('%s','@',-1) AND a.local = SUBSTRING_INDEX('%s','@', 1) AND a.is_active = 1 AND d.is_active = 1 AND (mu.email IS NOT NULL OR r.email IS NOT NULL) ORDER BY r.position ASC;
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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
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/usr/sbin/postconf -e "virtual_mailbox_domains = proxy:mysql:/etc/postfix/sql/mysql-virtual-domains.cf"
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/usr/sbin/postconf -e "virtual_mailbox_maps = proxy:mysql:/etc/postfix/sql/mysql-virtual-mailbox-maps.cf"
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/usr/sbin/postconf -e "virtual_alias_maps = proxy:mysql:/etc/postfix/sql/mysql-virtual-alias-maps.cf"
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/usr/sbin/postconf -e "virtual_transport = lmtp:unix:private/dovecot-lmtp"
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# --- Dienst aktivieren & neu laden --------------------------------------------
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#systemctl enable postfix >/dev/null 2>&1 || true
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