May 2018 - postfix-users

Config Postfix3
by Jamie Katharina Knuth 02 Jun '18

02 Jun '18

Hallo, es ist schon eine Weile her, dass ich mich mit Postfix befasst habe. Habe aber ein Upgrade auf Debian9 gemacht, und da kam Postfix 3.1.8 mit. Seit dem habe ich 1000e Versuche, sich per SASL einzuloggen. postfix/smtpd[16523]: warning: unknown[181.214.206.101]: SASL LOGIN authentication failed: authentication failure Das hatte ich definitiv vorher nicht. Kann man da was machen? -- Mit freundlichem Gruß, With kind regard, Jamie Katharina Knuth

2 1

Could not change Return-Path
by Jamie Katharina Knuth 29 May '18

29 May '18

Hallo, ich habe hier seit kurzem folgendes im Log postfix-local[15783]: Could not change Return-Path in message envelope(SRS): No at sign in sender address postconf -n liefere ich sofort nach, wenn gewünscht. ;) -- Mit freundlichem Gruß, With kind regard, Jamie Katharina Knuth

2 4

smtpd_recipient_restrictions / smtpd_relay_restrictions
by Thomas Krause 16 May '18

16 May '18

Guten Abend, ich bin gerade beim Migrieren eines sehr alten Servers. Beim "neuen" möchte ich die "relay/sasl Nutzer" anders behandeln als den Mailempfang über das Internet. Dabei habe ich herausgefunden, dass standardmässig zunächst die smtpd_relay_restrictions und anschliessend die smtpd_recipient_restrictions abgearbeitet werden. Das würde ich gern ändern, dass smtpd_relay_restrictions nur für relay/sasl-Nutzer (587/465) und smtpd_recipient_restrictions für eingehende Mails (25). In der master.cf habe ich konfiguriert: smtp inet n - y - 1 postscreen smtpd pass - - y - - smtpd ... -o smtpd_relay_restrictions= dnsblog unix - - y - 0 dnsblog tlsproxy unix - - y - 0 tlsproxy submission inet n - y - - smtpd ... -o smtpd_recipient_restrictions= smtps inet n - y - - smtpd ... -o smtpd_recipient_restrictions= und in der main.cf smtpd_relay_restrictions = reject_unlisted_sender # postfwd check_policy_service { inet:127.0.0.1:10041, default_action=DUNNO } permit_sasl_authenticated defer_unauth_destination smtpd_recipient_restrictions = reject_unauth_destination reject_unknown_recipient_domain check_policy_service { unix:private/policyd-spf, default_action=DUNNO } Frage: ist das sinnvoll/sicher, und: verträgt sich das mit postscreen? Danke u. Grüße, Thomas.

2 2

#efail
by J. Fahrner 15 May '18

15 May '18

Mit DKIM signierten Mails sollte das doch eigentlich nicht zum Problem werden, oder? https://www.heise.de/security/artikel/PGP-und-S-MIME-So-funktioniert-efail-… LG Jochen

5 15

Postfix + sender_bcc_maps + recipient_bcc_maps
by uwe 06 May '18

06 May '18

Hallo, Muss für ein Projekt die Mails einer bestimmten Adresse sowohl beim Ausgang als auch beim Eingang archivieren. Leider funktioniert bei mir sender_bcc_maps + recipient_bcc_maps nicht. Ich kann aber den Fehler nicht finden. Vielleicht hat einer von euch einen Tipp dazu. Meine Konfiguration: Debian 9 Postfix 3.1.8-0 Ausgabe von postconf -n alias_database = hash:/etc/aliases alias_maps = hash:/etc/aliases append_dot_mydomain = no biff = no bounce_queue_lifetime = 1d broken_sasl_auth_clients = yes compatibility_level = 2 disable_vrfy_command = yes html_directory = /usr/share/doc/postfix/html inet_interfaces = all inet_protocols = all mailbox_size_limit = 0 maximal_backoff_time = 1800s maximal_queue_lifetime = 1d message_size_limit = 52428800 milter_default_action = accept milter_protocol = 6 minimal_backoff_time = 300s mydestination = $myhostname, [fqdn_mailserver], localhost.[meine_domäne], localhost myhostname = [fqdn_mailserver] mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128 [meine_ip] myorigin = /etc/mailname non_smtpd_milters = inet:127.0.0.1:12345 postscreen_access_list = permit_mynetworks postscreen_bare_newline_enable = no postscreen_blacklist_action = drop postscreen_cache_cleanup_interval = 24h postscreen_cache_map = proxy:btree:$data_directory/postscreen_cache postscreen_dnsbl_action = enforce postscreen_dnsbl_sites = b.barracudacentral.org=127.0.0.2*7 dnsbl.inps.de=127.0.0.2*7 bl.mailspike.net=127.0.0.2*5 bl.mailspike.net=127.0.0.[10;11;12]*4 dnsbl.sorbs.net=127.0.0.10*8 dnsbl.sorbs.net=127.0.0.5*6 dnsbl.sorbs.net=127.0.0.7*3 dnsbl.sorbs.net=127.0.0.8*2 dnsbl.sorbs.net=127.0.0.6*2 dnsbl.sorbs.net=127.0.0.9*2 hostkarma.junkemailfilter.com=127.0.0.2*3 hostkarma.junkemailfilter.com=127.0.0.4*1 hostkarma.junkemailfilter.com=127.0.1.2*1 wl.mailspike.net=127.0.0.[18;19;20]*-2 hostkarma.junkemailfilter.com=127.0.0.1*-2 postscreen_dnsbl_threshold = 8 postscreen_dnsbl_ttl = 5m postscreen_greet_action = enforce postscreen_greet_banner = $smtp_banner postscreen_greet_ttl = 2d postscreen_greet_wait = 3s postscreen_non_smtp_command_enable = no postscreen_pipelining_enable = no proxy_read_maps = $local_recipient_maps $mydestination $virtual_alias_maps $virtual_alias_domains $virtual_mailbox_maps $virtual_mailbox_domains $relay_recipient_maps $relay_domains $canonical_maps $sender_canonical_maps $recipient_canonical_maps $relocated_maps $transport_maps $mynetworks $smtpd_sender_login_maps $sender_bcc_maps $recipient_bcc_maps queue_run_delay = 300s readme_directory = /usr/share/doc/postfix recipient_bcc_maps = hash:/etc/postfix/always_bcc recipient_delimiter = + relayhost = sender_bcc_maps = hash:/etc/postfix/always_bcc smtp_tls_CAfile = /etc/ssl/CA.pem smtp_tls_cert_file = /etc/ssl/server.crt smtp_tls_key_file = /etc/ssl/server.key smtp_tls_loglevel = 1 smtp_tls_security_level = may smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU) smtpd_client_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_unknown_client smtpd_data_restrictions = reject_unauth_pipelining, permit smtpd_delay_reject = yes smtpd_error_sleep_time = 10s smtpd_hard_error_limit = ${stress?1}${stress:5} smtpd_helo_required = yes smtpd_helo_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_invalid_hostname, reject_unknown_hostname, reject_non_fqdn_hostname, reject_unknown_sender_domain, reject_non_fqdn_sender smtpd_milters = inet:127.0.0.1:12345 smtpd_recipient_restrictions = permit_sasl_authenticated, permit_mynetworks, reject_invalid_hostname, reject_unknown_hostname, reject_non_fqdn_hostname, reject_unknown_sender_domain, reject_non_fqdn_sender, reject_unknown_reverse_client_hostname, reject_unauth_destination smtpd_sasl_auth_enable = yes smtpd_sasl_authenticated_header = yes smtpd_sasl_path = private/auth smtpd_sasl_type = dovecot smtpd_sender_login_maps = mysql:/etc/postfix/mysql-virtual_sender_permissions.cf smtpd_sender_restrictions = permit_sasl_authenticated, reject_authenticated_sender_login_mismatch, permit_mynetworks, reject_sender_login_mismatch, permit_sasl_authenticated, reject_unlisted_sender, reject_unknown_sender_domain smtpd_soft_error_limit = 3 smtpd_tls_CAfile = /etc/ssl/CA.pem smtpd_tls_auth_only = no smtpd_tls_cert_file = /etc/ssl/server.crt smtpd_tls_eecdh_grade = strong smtpd_tls_key_file = /etc/ssl/server.key smtpd_tls_loglevel = 1 smtpd_tls_mandatory_ciphers = high smtpd_tls_mandatory_protocols = !SSLv2, !SSLv3 smtpd_tls_security_level = may smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtpd_use_tls = yes tls_high_cipherlist = EDH+CAMELLIA:EDH+aRSA:EECDH+aRSA+AESGCM:EECDH+aRSA+SHA384:EECDH+aRSA+SHA256:EECDH:+CAMELLIA256:+AES256:+CAMELLIA128:+AES128:+SSLv3:!aNULL:!eNULL:!LOW:!3DES:!MD5:!EXP:!PSK:!DSS:!RC4:!SEED:!ECDSA:CAMELLIA256-SHA:AES256-SHA:CAMELLIA128-SHA:AES128-SHA virtual_alias_maps = mysql:/etc/postfix/mysql-virtual_alias_maps.cf virtual_gid_maps = static:2000 virtual_mailbox_base = / virtual_mailbox_domains = mysql:/etc/postfix/mysql-virtual_mailbox_domains.cf virtual_mailbox_limit = 0 virtual_mailbox_maps = mysql:/etc/postfix/mysql-virtual_mailbox_maps.cf virtual_minimum_uid = 2000 virtual_transport = lmtps:unix:private/dovecot-lmtp virtual_uid_maps = static:2000 meine master.cf # Postscreen on Port 25/tcp, filters zombies (spam machines) on first level with lowest costs. smtp inet n - n - 1 postscreen # Postscreen passes sane clients to the real SMTP daemon here. smtpd pass - - n - - smtpd # Reject non-FQDN HELOs on Port 25 (after passing postscreen process) -o smtpd_helo_restrictions=permit_mynetworks,reject_non_fqdn_helo_hostname -o smtpd_proxy_filter=127.0.0.1:10024 -o smtpd_client_connection_count_limit=10 -o smtpd_proxy_options=speed_adjust # For mail submitting users. Authenticated clients and known networks only. submission inet n - - - - smtpd -o syslog_name=postfix/submission -o smtpd_client_restrictions=permit_sasl_authenticated,reject -o smtpd_proxy_filter=127.0.0.1:10025 -o smtpd_client_connection_count_limit=10 -o smtpd_proxy_options=speed_adjust # Handles TLS connections for postscreen to make them readable tlsproxy unix - - n - 0 tlsproxy # This implements an ad-hoc DNS white/blacklist lookup service dnsblog unix - - n - 0 dnsblog pickup fifo n - - 60 1 pickup # -o content_filter=dksign:[127.0.0.1]:10027 cleanup unix n - - - 0 cleanup qmgr fifo n - n 300 1 qmgr tlsmgr unix - - - 1000? 1 tlsmgr rewrite unix - - - - - trivial-rewrite bounce unix - - - - 0 bounce defer unix - - - - 0 bounce trace unix - - - - 0 bounce verify unix - - - - 1 verify flush unix n - - 1000? 0 flush proxymap unix - - n - - proxymap proxywrite unix - - n - 1 proxymap smtp unix - - - - - smtp relay unix - - - - - smtp showq unix n - - - - showq error unix - - - - - error retry unix - - - - - error discard unix - - - - - discard local unix - n n - - local virtual unix - n n - - virtual lmtp unix - - - - - lmtp anvil unix - - - - 1 anvil scache unix - - - - 1 scache # LMTP with STARTTLS support, needs newer Dovecot versions lmtps unix - - - - - lmtp -o lmtp_use_tls=yes -o lmtp_tls_loglevel=1 -o lmtp_tls_CAfile=/etc/ssl/certs/ca-certificates.crt -o lmtp_enforce_tls=yes -o lmtp_tls_mandatory_protocols=!SSLv2,!SSLv3 -o lmtp_tls_protocols=!SSLv2,!SSLv3 -o lmtp_tls_mandatory_ciphers=high -o lmtp_tls_ciphers=high -o lmtp_send_xforward_command=yes -o lmtp_tls_security_level=encrypt -o lmtp_tls_note_starttls_offer=yes # Amavis reinjection, maximal 5 smtpd Prozesse, muss den Amavis Prozessen entsprechen! 127.0.0.1:10035 inet n - - - 5 smtp -o smtpd_authorized_xforward_hosts=127.0.0.0/8 -o smtpd_client_restrictions= -o smtpd_helo_restrictions= -o smtpd_sender_restrictions= -o smtpd_recipient_restrictions=permit_mynetworks,reject -o smtpd_data_restrictions= -o mynetworks=127.0.0.0/8 -o receive_override_options=no_unknown_recipient_checks Inhalt der always_bcc Datei: absender@domain archiv_absender@domain postmap und Neustart des Postfix wurden durchgeführt. Im Voraus Vielen Dank! -- Sent from: http://postfix.1071664.n5.nabble.com/Postfix-Germany-f21717.html

1 0