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后缀：“中继访问被拒绝”

tag-icon • tag-icon linux email debian postfix
后缀：“中继访问被拒绝”

我一直在关注这个教程：http://flurdy.com/docs/postfix/index.html

出于某种原因，即使我确保设置正确，它也不会向外部域发送任何邮件。它仍然可以从外部域接收邮件，但发送结果如下：

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>

我已启用 TLS 和 amavis。禁用其中一个（或两个）不会改变任何内容。我也可以发送到我自己的域，并且它会正确到达。

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

答案1

reject_unauth_destination从......中去除smtpd_client_restrictions。

编辑

您正在使用邮件传输协议发送电子邮件，因此即使您是从 连接，postfix仍会使用全部。这些将应用于以下方面smtpd_*_restrictions127.0.0.1smtpd_*_restrictions命令：客户端、helo、发送方、接收方、数据或数据结束。reject_unauth_destination拒绝任何邮件，除非域名回执单匹配$mydestionation或$relay_domains。在你的情况下，当reject_unauth_destination在中使用时smtpd_client_restrictions，首先检查，你的邮件几乎立即（在检查两个 RBL 后）被拒绝，因为你postfix显然不是 gmail.com 的最终目的地，并且所有允许从本地或经过身份验证的客户端（permit_mynetworks，permit_sasl_authenticated）中继邮件的规则都是跳过因为您已经收到了 REJECT smtpd_client_restrictions。

答案2

谢谢，我整理了所有 smtpd_client_restrictions，我的配置成功了

这是一个应该起作用的配置：

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

排序很重要。

答案3

我遇到了类似的问题，这救了我：

smtpd_relay_restrictions = permit_mynetworks, 
  permit_sasl_authenticated,
  reject_unauth_destination

答案4

您必须配置您的服务器以进行中继。

尝试为选项relayhost添加一个外部smtp主机：

postconf -e 'relayhost = smtp.example.com'

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