我已经用 Postfix、Roundcube 和 Dovecot 设置了一个邮件服务器。一切正常 - 几乎。
在我的国家，有一个名为 inbox.lv 的流行的免费电子邮件服务。他们设置了反垃圾邮件规则，当新服务器尝试向他们发送电子邮件时，他们首先将其列入灰名单 10 分钟，并要求服务器重新发送电子邮件。很公平。
但是，当使用 Postfix 发送外发电子邮件（来自 Roundcube 或 Thunderbird）时，它不会将邮件排队。相反，它会立即返回错误。还有一个日志条目（我为易读性添加的换行符/间距；为保护隐私而编辑的 IP 和电子邮件地址）：
May 31 23:17:18 21 postfix/smtpd[24814]: NOQUEUE: reject: RCPT from unknown[MY.IP.ADDRESS.HERE]:
450 4.1.1 <[email protected]>: Recipient address rejected: unverified address:
host mx1.inbox.lv[194.152.32.74] said: 450 4.7.1 <unknown[SERVER.IP.ADDRESS.HERE]>:
Client host rejected: greylisted, please retry in 597 seconds (in reply to RCPT TO command);
from=<[email protected]> to=<[email protected]> proto=ESMTP helo=<[192.168.1.216]>
所有队列设置均保留默认值。后缀版本为 2.10.1。
为什么会发生这种情况，如何让 Postfix 对消息进行排队并在 10 分钟后重试？
补充：后缀配置（匿名）：
[root@myserver etc]# postconf mail_version
mail_version = 2.10.1
[root@myserver etc]# postconf -n
alias_database = hash:/etc/aliases
alias_maps = hash:/etc/aliases
command_directory = /usr/sbin
config_directory = /etc/postfix
daemon_directory = /usr/libexec/postfix
data_directory = /var/lib/postfix
debug_peer_level = 2
debugger_command = PATH=/bin:/usr/bin:/usr/local/bin:/usr/X11R6/bin ddd $daemon_directory/$process_name $process_id & sleep 5
html_directory = no
inet_interfaces = all
inet_protocols = all
mail_owner = postfix
mailq_path = /usr/bin/mailq.postfix
manpage_directory = /usr/share/man
message_size_limit = 100000000
milter_default_action = accept
mydestination = localhost
mydomain = mydomain.lv
myhostname = mydomain.lv
mynetworks_style = host
myorigin = $mydomain
newaliases_path = /usr/bin/newaliases.postfix
non_smtpd_milters = $smtpd_milters
queue_directory = /var/spool/postfix
readme_directory = /usr/share/doc/postfix-2.10.1/README_FILES
sample_directory = /usr/share/doc/postfix-2.10.1/samples
sendmail_path = /usr/sbin/sendmail.postfix
setgid_group = postdrop
smtpd_milters = inet:127.0.0.1:8891
smtpd_recipient_restrictions = reject_unverified_recipient
smtpd_relay_restrictions = permit_mynetworks, permit_sasl_authenticated, reject_unauth_destination
smtpd_sasl_auth_enable = yes
smtpd_sasl_path = private/auth
smtpd_sasl_type = dovecot
smtpd_tls_auth_only = yes
smtpd_tls_cert_file = /etc/letsencrypt/live/mydomain.lv/fullchain.pem
smtpd_tls_key_file = /etc/letsencrypt/live/mydomain.lv/privkey.pem
smtpd_tls_security_level = may
unknown_local_recipient_reject_code = 550
virtual_mailbox_domains = d1.lv d2.lv d3.lv d4.lv
virtual_mailbox_limit = 0
virtual_transport = lmtp:unix:/var/run/dovecot/lmtp
[root@myserver etc]# postconf -M
smtp inet n - n - - smtpd
submission inet n - n - - smtpd
smtps inet n - n - - smtpd
pickup unix n - n 60 1 pickup
cleanup unix n - n - 0 cleanup
qmgr unix n - n 300 1 qmgr
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
relay unix - - n - - smtp
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
[root@myserver etc]#
