我一直在关注这个教程： http : //flurdy.com/docs/postfix/index.html
出于某种原因，即使在确认我设置正确之后，也不会将任何邮件发送到外部域。 它仍然可以从他们收到，但发送结果在这：
postfix/smtpd[26338]: NOQUEUE: reject: RCPT from localhost[127.0.0.1]: 554 5.7.1 <[email protected]>: Relay access denied; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<domain.com> 我已经启用了TLS，还有amavis。 禁用（或两者）不会改变任何东西。 我也可以发送到我自己的域名，它会正确到达。
这是我的/etc/postfix/main.cf：
# See /usr/share/postfix/main.cf.dist for a commented, more complete version # Debian specific: Specifying a file name will cause the first # line of that file to be used as the name. The Debian default # is /etc/mailname. myorigin = domain.com masquerade_domains = mail.domain.com masquerade_exceptions = root smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU) biff = no # appending .domain is the MUA's job. append_dot_mydomain = no # Uncomment the next line to generate "delayed mail" warnings #delay_warning_time = 4h readme_directory = no # TLS parameters smtpd_tls_cert_file=/etc/postfix/postfix.cert smtpd_tls_key_file=/etc/postfix/postfix.key smtpd_use_tls=yes smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache smtp_tls_security_level = may smtpd_tls_security_level = may smtp_tls_note_starttls_offer = yes smtpd_tls_loglevel = 3 smtpd_tls_received_header = yes smtpd_tls_session_cache_timeout = 3600s tls_random_source = dev:/dev/urandom smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt # See /usr/share/doc/postfix/TLS_README.gz in the postfix-doc package for # information on enabling SSL in the smtp client. myhostname = mail.domain.com alias_maps = hash:/etc/aliases alias_database = hash:/etc/aliases myorigin = mail.domain.com mydestination = domain.com, localhost, localhost.localdomain relayhost = mynetworks = 127.0.0.0/8, [::ffff:127.0.0.0]/104, [::1]/128 mailbox_command = procmail -a "$EXTENSION" mailbox_size_limit = 0 recipient_delimiter = + inet_interfaces = all mynetworks_style = host local_recipient_maps = mydestination = delay_warning_time = 4h unknown_local_recipient_reject_code = 450 maximum_queue_lifetime = 7d minimal_backoff_time = 1000s maximal_backoff_time = 8000s smtp_helo_timeout = 60s smtpd_recipient_limit = 32 smtpd_soft_error_limit = 3 smtpd_hard_error_limit = 12 smtpd_helo_restrictions = permit_mynetworks, warn_if_reject reject_non_fqdn_hostname, reject_invalid_hostname, permit smtpd_sender_restrictions = permit_mynetworks, warn_if_reject reject_non_fqdn_sender, reject_unknown_sender_domain, reject_unauth_pipelining, permit_sasl_authenticated, permit smtpd_client_restrictions = reject_rbl_client sbl.spamhaus.org, reject_rbl_client blackholes.easynet.nl, reject_unauth_destination, permit smtpd_recipient_restrictions = reject_unauth_pipelining, permit_mynetworks, permit_sasl_authenticated, reject_non_fqdn_recipient, reject_unknown_recipient_domain, reject_unauth_destination, permit smtpd_data_restrictions = reject_unauth_pipelining smtpd_helo_required = yes smtpd_delay_reject = yes disable_vrfy_command = yes alias_maps = hash:/etc/postfix/aliases alias_database = hash:/etc/postfix/aliases virtual_mailbox_base = /var/spool/mail/virtual virtual_mailbox_maps = mysql:/etc/postfix/mysql_mailbox.cf virtual_alias_maps = mysql:/etc/postfix/mysql_alias.cf virtual_mailbox_domains = mysql:/etc/postfix/mysql_domains.cf virtual_uid_maps = static:5000 virtual_gid_maps = static:5000 content_filter = amavis:[127.0.0.1]:10024 # SASL smtpd_sasl_auth_enable = yes broken_sasl_auth_clients = no smtpd_sasl_security_options = noanonymous smtpd_sasl_local_domain = domain.com
从smtpd_client_restrictions删除reject_unauth_destination 。
编辑
您正在使用SMTP发送电子邮件，所以即使您从127.0.0.1连接， postfix仍会使用所有smtpd_*_restrictions 。 这些smtpd_*_restrictions按以下顺序应用 ：客户端，helo，发件人，收件人，数据或数据结束。 reject_unauth_destination拒绝任何邮件，除非RCPT TO中的域匹配$mydestionation或$relay_domains 。 在你的情况下，当在smtpd_client_restrictions使用reject_unauth_destination （首先被检查）时，你的邮件几乎立即（在检查两个RBL之后）被拒绝，因为你的postfix显然不是gmail.com的最终目的地，所有规则都允许从本地中继邮件或已validation的客户端（ permit_mynetworks ， permit_sasl_authenticated ）将被跳过，因为您已经从smtpd_client_restrictions了REJECT。
谢谢，我分类了所有smtpd_client_restrictions和我的configuration工程
这是一个configuration应该工作：
smtpd_recipient_restrictions = check_policy_service unix:/var/spool/postfix/postgrey/socket, reject_rbl_client xbl.spamhaus.org, reject_rbl_client pbl.spamhaus.org, reject_rbl_client sbl.spamhaus.org, reject_rbl_client multi.uribl.com, reject_rbl_client rbl-plus.mail-abuse.org, reject_rbl_client dialups.mail-abuse.org, permit_mynetworks, reject_unauth_destination, reject_non_fqdn_recipient, reject_unknown_sender_domain, reject_unknown_recipient_domain
sorting很重要。
我有类似的问题，这救了我：
smtpd_relay_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination
您必须configuration您的服务器进行中继。
尝试为选项relayhost添加一个外部smtp主机：
postconf -e 'relayhost = smtp.example.com'