我刚刚设置了一个 Postfix 实例并向 添加了几个名称 /etc/aliases。例如：
root: toor, nobody
foo: root, [email protected]
foo2: foo, [email protected]
我成功运行了，现在每次我从同一域中的任何电子邮件地址（假设）newaliases发送电子邮件到时，它都会被正确送达。每次其他人发送电子邮件到时，它都会被退回。foo2bar.bar[email protected]Recipient address rejected: Access denied
输出postconf -n
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
config_directory = /etc/postfix
inet_interfaces = all
local_recipient_maps = proxy:unix:passwd.byname $alias_maps # Not sure about this
mailbox_size_limit = 0
mydestination = foo.bar.bar, bar.bar, www.bar.bar, localhost, localhost.localdomain
myhostname = foo.bar.bar
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
myorigin = /etc/mailname
recipient_delimiter = +
relayhost = relay.bar.bar
smtp_sasl_auth_enable = yes
smtp_sasl_password_maps = hash:/etc/postfix/relay.credentials.txt
smtp_sasl_security_options =
smtp_tls_session_cache_database = btree:${data_directory}/smtp_scache
smtpd_tls_cert_file = /etc/postfix/foo.crt
smtpd_tls_key_file = /etc/postfix/foo.key
smtpd_tls_protocols = !SSLv2, !SSLv3
smtpd_tls_security_level = may
smtpd_tls_session_cache_database = btree:${data_directory}/smtpd_scache
smtpd_use_tls = yes
成功时：
Mar 31 18:50:20 foo postfix/submission/smtpd[18213]: connect from unknown[1.2.3.4]
Mar 31 18:50:22 foo postfix/submission/smtpd[18213]: 6DBFFFFFF5: client=unknown[1.2.3.4], sasl_method=PLAIN, sasl_username=user
Mar 31 18:50:23 foo postfix/cleanup[18228]: 6DBFFFFFF5: message-id=<[email protected]>
Mar 31 18:50:23 foo postfix/qmgr[15467]: 6DBFFFFFF5: from=<[email protected]>, size=528, nrcpt=1 (queue active)
Mar 31 18:50:23 foo postfix/cleanup[18228]: 1B4C750013: message-id=<[email protected]>
Mar 31 18:50:23 foo postfix/local[18234]: 6DB404FFF5: to=<[email protected]>, relay=local, delay=1, delays=0.96/0.02/0/0.03, dsn=2.0.0, status=sent (forwarded as 1B4C750013)
Mar 31 18:50:23 foo postfix/qmgr[15467]: 1B4C750013: from=<[email protected]>, size=659, nrcpt=3 (queue active)
Mar 31 18:50:23 foo postfix/qmgr[15467]: 6DB404FFF5: removed
Mar 31 18:50:23 foo postfix/smtp[18235]: 1B4C750013: to=<[email protected]>, orig_to=<[email protected]>, relay=relay.bar.bar[2.4.6.8]:587, delay=0.56, delays=0.03/0.02/0.4/0.1, dsn=2.0.0, status=sent (250 Delivery in progress)
[...] More deliveries locally [...]
失败时：
Mar 31 18:57:52 foo postfix/submission/smtpd[20657]: connect from unknown[3.6.9.12]
Mar 31 18:57:52 foo postfix/submission/smtpd[20657]: NOQUEUE: reject: RCPT from unknown[3.6.9.12]: 554 5.7.1 <[email protected]>: Recipient address rejected: Access denied; from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<external.server.gmail.com>
Mar 31 18:57:52 foo postfix/submission/smtpd[20657]: disconnect from unknown[3.6.9.12]
的内容master.cf
smtp inet n - - - - smtpd
submission inet n - - - - smtpd
-o syslog_name=postfix/submission
-o smtpd_tls_wrappermode=no
-o smtpd_tls_security_level=encrypt
-o smtpd_sasl_auth_enable=yes -o
smtpd_recipient_restrictions=permit_mynetworks,permit_sasl_authenticated,reject
-o milter_macro_daemon_name=ORIGINATING -o smtpd_sasl_type=dovecot -o
smtpd_sasl_path=private/auth
pickup fifo n - - 60 1 pickup
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
maildrop unix - n n - - pipe
flags=DRhu user=vmail argv=/usr/bin/maildrop -d ${recipient}
uucp unix - n n - - pipe
flags=Fqhu user=uucp argv=uux -r -n -z -a$sender - $nexthop!rmail
($recipient)
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=bsmtp argv=/usr/lib/bsmtp/bsmtp -t$nexthop -f$sender
$recipient
scalemail-backend unix - n n - 2 pipe
flags=R user=scalemail argv=/usr/lib/scalemail/bin/scalemail-store
${nexthop} ${user} ${extension}
mailman unix - n n - - pipe
flags=FR user=list argv=/usr/lib/mailman/bin/postfix-to-mailman.py
${nexthop} ${user}
我也碰巧知道事实上它relay.bar.bar运行良好并且不会引起问题。有什么帮助吗？
答案1
在提交行master.cf，您已smtpd_recipient_restrictions使用此行覆盖参数
-o smtpd_recipient_restrictions=permit_mynetworks,permit_sasl_authenticated,reject
这意味着，您只被允许接收来自您的网络的电子邮件或由 SASL 认证的客户端提交的电子邮件。
在您的第一次日志（成功案例）中，您的客户端已成功通过 SASL 身份验证。
Mar 31 18:50:22 foo postfix/submission/smtpd[18213]: 6DBFFFFFF5: client=unknown[1.2.3.4], sasl_method=PLAIN, sasl_username=user
因此，它将被后缀允许。
在您的第二份日志（失败案例）中，您的客户端未通过身份验证。这就是电子邮件被拒绝的原因。