这是新安装。当用户存在时，PostFix 会报告“550 5.1.1”“未找到收件人”。
- 用户可以在任何地方发送电子邮件。
- 用户可以通过localhost互相发送电子邮件。
- 所有发送给用户的外部电子邮件均返回 550 5.1.1 错误消息。
我在 maillog 文件中没有看到任何错误。我想我已经阅读了此站点上所有包含“550”的帖子，但没有一个答案看起来合适。有谁知道为什么已知用户被报告为未找到？
这是我的配置文件：
/etc/postfix/master.cf
# ==========================================================================
# service type private unpriv chroot wakeup maxproc command + args
# (yes) (yes) (yes) (never) (100)
# ==========================================================================
smtp inet n - n - - smtpd
submission inet n - n - - smtpd
# -o smtpd_tls_security_level=encrypt
# -o smtpd_sasl_auth_enable=yes
# -o smtpd_client_restrictions=permit_sasl_authenticated,reject
# -o milter_macro_daemon_name=ORIGINATING
smtps inet n - n - - smtpd
# -o smtpd_tls_wrappermode=yes
# -o smtpd_sasl_auth_enable=yes
# -o smtpd_client_restrictions=permit_sasl_authenticated,reject
# -o milter_macro_daemon_name=ORIGINATING
#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
proxywrite unix - - n - 1 proxymap
smtp unix - - n - - smtp
# When relaying mail as backup MX, disable fallback_relay to avoid MX loops
relay unix - - n - - smtp
-o smtp_fallback_relay=
# -o smtp_helo_timeout=5 -o smtp_connect_timeout=5
showq unix n - n - - showq
error unix - - n - - error
retry 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
/etc/postfix/main.cf
#soft_bounce = no
queue_directory = /var/spool/postfix
command_directory = /usr/sbin
daemon_directory = /usr/libexec/postfix
data_directory = /var/lib/postfix
mail_owner = postfix
#default_privs = nobody
# INTERNET HOST AND DOMAIN NAMES
#myhostname = host.domain.tld
#myhostname = virtual.domain.tld
mydomain = [MYACTUALDOMAINNAME].com
#myorigin = $myhostname
myorigin = $mydomain
inet_interfaces = all
#inet_interfaces = $myhostname
#inet_interfaces = $myhostname, localhost
#inet_interfaces = localhost
# Enable IPv4, and IPv6 if supported
inet_protocols = all
#proxy_interfaces =
#proxy_interfaces = 1.2.3.4
# See also below, section "REJECTING MAIL FOR UNKNOWN LOCAL USERS".
#
mydestination = localhost, localhost.$mydomain
unknown_local_recipient_reject_code = 550
# Specify "mynetworks_style = host" when Postfix should "trust"
# only the local machine.
#
#mynetworks_style = class
#mynetworks_style = subnet
#mynetworks_style = host
# INTERNET OR INTRANET
#relayhost = $mydomain
#relayhost = [gateway.my.domain]
#relayhost = [mailserver.isp.tld]
#relayhost = uucphost
#relayhost = [an.ip.add.ress]
# REJECTING UNKNOWN RELAY USERS
#relay_recipient_maps = hash:/etc/postfix/relay_recipients
# INPUT RATE CONTROL
# Specify 0 to disable the feature. Valid delays are 0..10.
#
#in_flow_delay = 1s
#alias_maps = dbm:/etc/aliases
alias_maps = hash:/etc/aliases
#alias_maps = hash:/etc/aliases, nis:mail.aliases
#alias_maps = netinfo:/aliases
# DELIVERY TO MAILBOX
home_mailbox = Maildir/
# The mail_spool_directory parameter specifies the directory where
# UNIX-style mailboxes are kept. The default setting depends on the
# system type.
#
#mail_spool_directory = /var/mail
#mail_spool_directory = /var/spool/mail
#mailbox_command = /some/where/procmail
#mailbox_command = /some/where/procmail -a "$EXTENSION"
#mailbox_transport = lmtp:unix:/var/lib/imap/socket/lmtp
#mailbox_transport = cyrus
#luser_relay = [email protected]
#luser_relay = [email protected]
#luser_relay = admin+$local
#header_checks = regexp:/etc/postfix/header_checks
# FAST ETRN SERVICE
#fast_flush_domains = $relay_domains
# SHOW SOFTWARE VERSION OR NOT
#smtpd_banner = $myhostname ESMTP $mail_name
#smtpd_banner = $myhostname ESMTP $mail_name ($mail_version)
# PARALLEL DELIVERY TO THE SAME DESTINATION
#local_destination_concurrency_limit = 2
#default_destination_concurrency_limit = 20
# INSTALL-TIME CONFIGURATION INFORMATION
sendmail_path = /usr/sbin/sendmail.postfix
newaliases_path = /usr/bin/newaliases.postfix
mailq_path = /usr/bin/mailq.postfix
setgid_group = postdrop
# html_directory: The location of the Postfix HTML documentation.
#
html_directory = no
# manpage_directory: The location of the Postfix on-line manual pages.
#
manpage_directory = /usr/share/man
以下是 GMail 的错误消息
Delivery to the following recipient failed permanently:
[[email protected]]
Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the server for the recipient domain [domain.com] by smtp.secureserver.net. [68.178.213.37].
The error that the other server returned was:
550 5.1.1 <[[email protected]]> Recipient not found. <http://x.co/irbounce>
答案1
完全无法传送给下列收件人：[电子邮件保护]永久故障的技术细节：Google 尝试发送您的邮件，但被收件人域的服务器拒绝[电子邮件保护]由 smtp.secureserver.net 发送。[68.178.213.37]。另一台服务器返回的错误为：550 5.1.1 未找到收件人。
从上面的反弹，看起来像是您的 MX 记录仍指向 GoDaddy 电子邮件托管：smtp.secureserver.net。更改您的 MX 记录，使其指向您的服务器。
更多信息：互联网上的随机帮助页面和MX 记录维基百科
答案2
您需要将您的实际邮件域添加到mydestination列表中，因为它当前仅设置为接受本地主机：
mydestination = localhost, localhost.$mydomain, $mydomain
查看Postfix 文档了解详情。