我需要从外部电子邮件发送电子邮件（例如“用户@external_domain.com”），发送到我服务器上的电子邮件帐户（例如：“root@my_domain.com”），转发到另一个外部地址（例如：“[电子邮件受保护]“）。但它不起作用，并且日志文件上没有错误。
域名地址、电子邮件和 IP 的更改只是为了维护客户的隐私。
从外部电子邮件发送消息时，示例用户@external_domain.com，发送到我的服务器上的电子邮件帐户，例如：root@my_domain.com，它正确到达根电子邮件箱。
登录如下：
May 24 18:47:58 mail postfix/smtpd[1711]: connect from a4-salsa4-1.my_domain.com[62.14.x.x]
May 24 18:47:58 mail postfix/smtpd[1711]: 6C776419DE: client=a4-salsa4-1.my_domain.com[62.14.x.x]
May 24 18:47:58 mail postfix/cleanup[1715]: 6C776419DE: message-id=<[email protected]>
May 24 18:47:58 mail postfix/qmgr[1415]: 6C776419DE: from=<exemplo user@external_domain.com>, size=2087, nrcpt=1 (queue active)
May 24 18:47:58 mail postfix/smtpd[1711]: disconnect from a4-salsa4-1.my_domain.com[62.14.x.x] ehlo=1 mail=1 rcpt=1 data=1 quit=1 commands=5
May 24 18:47:58 mail postfix/local[1716]: 6C776419DE: to=<root@my_domain.com>, relay=local, delay=0.07, delays=0.06/0.01/0/0, dsn=2.0.0, status=sent (delivered to mailbox)
May 24 18:47:58 mail postfix/qmgr[1415]: 6C776419DE: removed
我想要到达“root”帐户的所有电子邮件（root@my_domain.com) 转发至“[电子邮件受保护]”，所以我配置了路由。
启用转发（在 shell 中以 root 用户身份）：
# echo "\ root [email protected]"> ~ / .forward
通过此路由设置，从“发送的电子邮件”用户@external_domain.com“发送至电子邮件地址”root@my_domain.com”，到达本地邮件帐户（在我的 vps 处），但不到达“[电子邮件受保护]”。
然而日志表明它们已被发送到“[电子邮件受保护]”，请参阅下面的日志：
May 24 17:58:14 mail postfix/smtpd[32297]: connect from a4-salsa4-1.my_domain.com[62.14.x.x]
May 24 17:58:14 mail postfix/smtpd[32297]: 7A43B41A02: client=a4-salsa4-1.my_domain.com[62.14.x.x]
May 24 17:58:14 mail postfix/cleanup[32301]: 7A43B41A02: message-id=<[email protected]>
May 24 17:58:14 mail postfix/qmgr[30879]: 7A43B41A02: from=<user@external_domain.com>, size=2087, nrcpt=1 (queue active)
May 24 17:58:14 mail postfix/smtpd[32297]: disconnect from a4-salsa4-1.my_domain.com[62.14.x.x] ehlo=1 mail=1 rcpt=1 data=1 quit=1 commands=5
May 24 17:58:14 mail postfix/cleanup[32301]: 7FD4D41A08: message-id=<[email protected]>
May 24 17:58:14 mail postfix/qmgr[30879]: 7FD4D41A08: from=<user@external_domain.com>, size=2231, nrcpt=1 (queue active)
May 24 17:58:14 mail postfix/local[32302]: 7A43B41A02: to=<root@my_domain.com>, relay=local, delay=0.03, delays=0.02/0.01/0/0, dsn=2.0.0, status=sent (forwarded as 7FD4D41A08)
May 24 17:58:14 mail postfix/qmgr[30879]: 7A43B41A02: removed
May 24 17:58:14 mail postfix/smtp[32303]: 7FD4D41A08: to=<[email protected]>, orig_to=<root@my_domain.com>, relay=relay.my_vps_host.com[177.153.9.96]:25, delay=0.33, delays=0/0.01/0.31/0.01, dsn=2.0.0, status=sent (250 2.0.0 Ok: queued as CE14D777DC134)
May 24 17:58:14 mail postfix/qmgr[30879]: 7FD4D41A08: removed
当向 root 发送本地电子邮件时（例如：crontab 作业），电子邮件成功到达本地帐户，并且也到达“[电子邮件受保护]”，查看日志：
May 24 17:55:03 mail postfix/smtp[32250]: 6E08B41A02: to=<[email protected]>, orig_to=<root>, relay=relay.my_vps_host.com[177.153.9.96]:25, delay=1.2, delays=0.01/0.02/0.93/0.28, dsn=2.0.0, status=sent (250 2.0.0 Ok: queued as 6732B777D6711)
May 24 17:55:03 mail postfix/qmgr[30879]: 6E08B41A02: removed
我强烈怀疑我有一个过滤器“中继.my_vps_host.com“屏蔽消息。
因此，我在服务器的支持下打开了一个检查请求，他们告诉我中继中没有任何类型的锁定（“中继.my_vps_host.com”）。
应该转发的电子邮件根本不会到达“[电子邮件受保护]”。
/etc/postfix/main.cf：
smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
biff = no
append_dot_mydomain = no
readme_directory = no
compatibility_level = 2
smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated
defer_unauth_destination
myhostname = mail.my_domain.com
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
myorigin = /etc/mailname
mydestination = $myhostname, my_domain.com, mail.my_domain.com, localhost.my_domain.com, , localhost
relayhost = relay.my_vps_host.com
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_size_limit = 0
recipient_delimiter = +
inet_interfaces = all
inet_protocols = all
/etc/postfix/master.cf：
# Postfix master process configuration file. For details on the format
# of the file, see the master(5) manual page (command: "man 5 master" or
# on-line: http://www.postfix.org/master.5.html).
#
# Do not forget to execute "postfix reload" after editing this file.
#
# ==========================================================================
# service type private unpriv chroot wakeup maxproc command + args
# (yes) (yes) (no) (never) (100)
# ==========================================================================
smtp inet n - y - - smtpd
#smtp inet n - y - 1 postscreen
#smtpd pass - - y - - smtpd
#dnsblog unix - - y - 0 dnsblog
#tlsproxy unix - - y - 0 tlsproxy
submission inet n - y - - smtpd
# -o syslog_name=postfix/submission
# -o smtpd_tls_security_level=encrypt
# -o smtpd_sasl_auth_enable=yes
# -o smtpd_reject_unlisted_recipient=no
# -o smtpd_client_restrictions=$mua_client_restrictions
# -o smtpd_helo_restrictions=$mua_helo_restrictions
# -o smtpd_sender_restrictions=$mua_sender_restrictions
# -o smtpd_recipient_restrictions=
# -o smtpd_relay_restrictions=permit_sasl_authenticated,reject
# -o milter_macro_daemon_name=ORIGINATING
#smtps inet n - y - - smtpd
# -o syslog_name=postfix/smtps
# -o smtpd_tls_wrappermode=yes
# -o smtpd_sasl_auth_enable=yes
# -o smtpd_reject_unlisted_recipient=no
# -o smtpd_client_restrictions=$mua_client_restrictions
# -o smtpd_helo_restrictions=$mua_helo_restrictions
# -o smtpd_sender_restrictions=$mua_sender_restrictions
# -o smtpd_recipient_restrictions=
# -o smtpd_relay_restrictions=permit_sasl_authenticated,reject
# -o milter_macro_daemon_name=ORIGINATING
#628 inet n - y - - qmqpd
pickup unix n - y 60 1 pickup
cleanup unix n - y - 0 cleanup
qmgr unix n - n 300 1 qmgr
#qmgr unix n - n 300 1 oqmgr
tlsmgr unix - - y 1000? 1 tlsmgr
rewrite unix - - y - - trivial-rewrite
bounce unix - - y - 0 bounce
defer unix - - y - 0 bounce
trace unix - - y - 0 bounce
verify unix - - y - 1 verify
flush unix n - y 1000? 0 flush
proxymap unix - - n - - proxymap
proxywrite unix - - n - 1 proxymap
smtp unix - - y - - smtp
relay unix - - y - - smtp
# -o smtp_helo_timeout=5 -o smtp_connect_timeout=5
showq unix n - y - - showq
error unix - - y - - error
retry unix - - y - - error
discard unix - - y - - discard
local unix - n n - - local
virtual unix - n n - - virtual
lmtp unix - - y - - lmtp
anvil unix - - y - 1 anvil
scache unix - - y - 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/bin/maildrop -d ${recipient}
#
# ====================================================================
#
# Recent Cyrus versions can use the existing "lmtp" master.cf entry.
#
# Specify in cyrus.conf:
# lmtp cmd="lmtpd -a" listen="localhost:lmtp" proto=tcp4
#
# Specify in main.cf one or more of the following:
# mailbox_transport = lmtp:inet:localhost
# virtual_transport = lmtp:inet:localhost
#
# ====================================================================
#
# Cyrus 2.1.5 (Amos Gouaux)
# Also specify in main.cf: cyrus_destination_recipient_limit=1
#
#cyrus unix - n n - - pipe
# user=cyrus argv=/cyrus/bin/deliver -e -r ${sender} -m ${extension} ${user}
#
# ====================================================================
# Old example of delivery via Cyrus.
#
#old-cyrus unix - n n - - pipe
# flags=R user=cyrus argv=/cyrus/bin/deliver -e -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=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}
my_domain.com 的 SPF：
- v=spf1 +a +mx +ptr:my_vps_host.com 包括:_spf.google.com -all
我在用着：
- Debian 9（延伸）。
- 后缀 3.1.8。
有人可以帮助将转发的电子邮件发送到“root@my_domain.com”吗？
太感谢了！