Postfix
DKIM 文件域空
gmail 的郵件簽名失敗。不知道為什麼。它通過 Telnet 傳遞，但郵件命令失敗。以下是原始郵件回复：
Delivered-To: user@test.com Received: by 10.100.177.142 with SMTP id j14csp1917050pjb; Tue, 2 May 2017 08:11:12 -0700 (PDT) X-Received: by 10.200.41.8 with SMTP id y8mr27532431qty.220.1493737872152; Tue, 02 May 2017 08:11:12 -0700 (PDT) Return-Path: <user@mpx.test.com> Received: from test1.mpx.test.com (ec2-xx-xx-xx-xx.compute-1.amazonaws.com. [xx.xx.xx.xx]) by mx.google.com with ESMTPS id k43si17514690qta.19.2017.05.02.08.11.12 for <user@test.com> (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 02 May 2017 08:11:12 -0700 (PDT) Received-SPF: pass (google.com: domain of user@mpx.test.com designates xx.xx.xx.xx as permitted sender) client-ip=xx.xx.xx.xx; Authentication-Results: mx.google.com; dkim=fail header.i=@mpx.test.com; spf=pass (google.com: domain of user@mpx.test.com designates xx.xx.xx.xx as permitted sender) smtp.mailfrom=user@mpx.test.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=test.com Received: from mongobkp3.test.local (mongobkp3.test.local [xx.xx.xx.xx]) by test1.mpx.test.com (Postfix) with ESMTP id D18F2611B2 for <user@test.com>; Tue, 2 May 2017 15:11:11 +0000 (UTC) X-DKIM: Sendmail DKIM Filter v2.8.3 test11.mpx.test.com D18F2611B2 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mpx.test.com; s=ggmx2; t=1493737871; bh=ehVmMHs7ThAQbbHJS1xFhiviXLfcCW/H8SCDhdqpBjk=; h=Date:To:MIME-Version:Content-Type:Content-Transfer-Encoding: Message-Id:From; b=nQANMdy69jSkfQW/jOaZqKsN8gLj5GhiH4CQv8NXy5orGi5eqVt4RpBnz2ZVlUdUX qrfZGXHR1YufY8Ij0IM6eZvlC8uP4H37N0ItKXkLSLMT2PZb2gkIL/QY+6ToKkkiWO n3HTj7HWpdWxIp8uXrLuX03080v38lgPD0nds3lg= Received: by mongobkp3.test.local (Postfix, from userid 1085) id CC0AE41E78; Tue,我的 master.cf 看起來像這樣：
# # Postfix master process configuration file. For details on the format # of the file, see the master(5) manual page (command: "man 5 master"). # # ========================================================================== # service type private unpriv chroot wakeup maxproc command + args # (yes) (yes) (yes) (never) (100) # ========================================================================== smtp inet n - n - - smtpd -v # -o content_filter=dksign submission inet n - n - - smtpd 587 inet n - n - - smtpd -v # -o smtpd_enforce_tls=yes -o smtpd_sasl_auth_enable=yes # -o content_filter=dksign # -o smtpd_client_restrictions=permit_sasl_authenticated,reject #smtps inet n - n - - smtpd # -o smtpd_tls_wrappermode=yes # -o smtpd_sasl_auth_enable=yes # -o smtpd_client_restrictions=permit_sasl_authenticated,reject #628 inet n - n - - qmqpd pickup fifo n - n 60 1 pickup cleanup unix n - n - 0 cleanup qmgr fifo n - n 300 1 qmgr #qmgr fifo n - n 300 1 oqmgr tlsmgr unix - - n 1000? 1 tlsmgr rewrite unix - - n - - trivial-rewrite bounce unix - - n - 0 bounce defer unix - - n - 0 bounce trace unix - - n - 0 bounce verify unix - - n - 1 verify flush unix n - n 1000? 0 flush proxymap unix - - n - - proxymap smtp unix - - n - - smtp # When relaying mail as backup MX, disable fallback_relay to avoid MX loops relay unix - - n - - smtp -o fallback_relay= # -o smtp_helo_timeout=5 -o smtp_connect_timeout=5 showq unix n - n - - showq error unix - - n - - error discard unix - - n - - discard local unix - n n - - local virtual unix - n n - - virtual lmtp unix - - n - - lmtp anvil unix - - n - 1 anvil scache unix - - n - 1 scache # # ==================================================================== # Interfaces to non-Postfix software. Be sure to examine the manual # pages of the non-Postfix software to find out what options it wants. # # # Many of the following services use the Postfix pipe(8) delivery # agent. See the pipe(8) man page for information about ${recipient} # and other message envelope options. # ==================================================================== # # maildrop. See the Postfix MAILDROP_README file for details. # Also specify in main.cf: maildrop_destination_recipient_limit=1 # maildrop unix - n n - - pipe flags=DRhu user=vmail argv=/usr/local/bin/maildrop -d ${recipient} # # The Cyrus deliver program has changed incompatibly, multiple times. # old-cyrus unix - n n - - pipe flags=R user=cyrus argv=/usr/lib/cyrus-imapd/deliver -e -m ${extension} ${user} # Cyrus 2.1.5 (Amos Gouaux) # Also specify in main.cf: cyrus_destination_recipient_limit=1 cyrus unix - n n - - pipe user=cyrus argv=/usr/lib/cyrus-imapd/deliver -e -r ${sender} -m ${extension} ${user} # # See the Postfix UUCP_README file for configuration details. # uucp unix - n n - - pipe flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail ($recipient) # # Other external delivery methods. # ifmail unix - n n - - pipe flags=F user=ftn argv=/usr/lib/ifmail/ifmail -r $nexthop ($recipient) bsmtp unix - n n - - pipe flags=Fq. user=foo argv=/usr/local/sbin/bsmtp -f $sender $nexthop $recipient我的 main.cf 看起來像這樣：
# RR: Mon Apr 29, 2013 => added 72.172.71.2/32 to support (LA) Duo VPN queue_directory = /var/spool/postfix command_directory = /usr/sbin daemon_directory = /usr/libexec/postfix mail_owner = postfix myhostname = test1.mpx.test.com mydomain = mpx.test.com masquerade_domains = !jetsetter.com !parkandbond.com !testcity.com !testtaste.com !wsjselect.com !mx.test.com !qatools.test.com test.com $mydomain mynetworks = XX.XX.XX.XX XX.XX.XX.XX XX.XX.XX.XX $myhostname smtpd_delay_reject = yes smtpd_helo_required = yes soft_bounce = no strict_rfc821_envelopes = yes local_header_rewrite_clients = permit_mynetworks smtp_generic_maps = pcre:/etc/postfix/generic unknown_local_recipient_reject_code = 550 broken_sasl_auth_clients = no smtpd_sasl_application_name = smtpd smtpd_sasl_auth_enable = no smtpd_sasl_local_domain = smtpd_sasl_security_options = noanonymous #smtpd_enforce_tls = no #smtpd_tls_CAfile = /etc/postfix/cacert.pem #smtpd_tls_cert_file = /etc/postfix/mx1-cert.pem #smtpd_tls_key_file = /etc/postfix/mx1-key.pem #smtpd_tls_received_header = yes #smtpd_tls_session_cache_database = btree:/var/spool/postfix/smtpd_tls_session_cache #tls_random_source = dev:/dev/urandom #smtpd_tls_security_level = may mailbox_size_limit = 102400000 message_size_limit = 51200000 queue_minfree = 76800000 smtpd_client_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unknown_client smtpd_helo_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_invalid_hostname, reject_non_fqdn_hostname smtpd_sender_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unlisted_sender, reject_non_fqdn_sender, reject_unknown_sender_domain smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unlisted_recipient, reject_non_fqdn_recipient, reject_unauth_destination, reject_unknown_recipient_domain # check_recipient_access hash:/etc/postfix/filtered_domains smtpd_data_restrictions = permit_mynetworks, reject_unauth_pipelining, permit_sasl_authenticated smtpd_end_of_data_restrictions = unknown_local_recipient_reject_code = 550 alias_maps = hash:/etc/aliases alias_database = hash:/etc/aliases debug_peer_level = 2 debugger_command = PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin xxgdb $daemon_directory/$process_name $process_id & sleep 5 sendmail_path = /usr/sbin/sendmail.postfix newaliases_path = /usr/bin/newaliases.postfix mailq_path = /usr/bin/mailq.postfix setgid_group = postdrop html_directory = no manpage_directory = /usr/share/man sample_directory = /usr/share/doc/postfix-2.3.3/samples readme_directory = /usr/share/doc/postfix-2.3.3/README_FILES postscreen_upstream_proxy_protocol = haproxy milter_default_action = accept milter_protocol = 2 smtpd_milters = inet:localhost:8891 non_smtpd_milters = inet:localhost:8891 smtpd_tls_auth_only = no smtp_use_tls = yes smtpd_use_tls = yes smtp_tls_note_starttls_offer = yes smtpd_tls_key_file = /etc/ssl/private/mail.mpx.test.com.tld.key smtpd_tls_cert_file = /etc/ssl/certs/mail.mpx.test.com.tld.crt smtpd_tls_CAfile = /etc/ssl/certs/cacert.pem smtp_tls_security_level = encrypt smtpd_tls_loglevel = 1 #smtpd_tls_received_header = yes tls_random_source = dev:/dev/urandom更新！： 如果我複制 smtp_generic_maps，然後 dkim 會通過，但是我的電子郵件中的 from 域顯示為通過我的中繼伺服器發送它的主機。我想知道域映射的工作方式是否有問題：
(.*)@(.*)\.test\.local/ $1@mpx.test.com
經過多次故障排除後，我意識到問題在於映射。當您使用 mailx 從外部客戶端接收到中繼伺服器
/etc/postfix/generic的電子郵件時，您可以在文件中映射以將郵件作為您的域發送出去。然而，解決問題的更簡單方法是使用帶有 mailx 的 -r 選項從客戶端發送郵件並將發件人指定為具有您要發送的域的人。例如：mailx -r testuser@<domainyouwant> -S "test" enduser@<whereever>這將通過 DKIM 簽名並作為您要發送的使用者發送。