当我遇到451 4.3.5 Server configuration问题时，我被告知从 postfix 配置中删除这些设置：
check_policy_service inet:127.0.0.1:7777,
check_policy_service inet:127.0.0.1:10031
这些是什么？这些重要吗？我只是发送电子邮件。
我从我的 postfix 中删除了这些行，服务器配置错误就消失了。这是我的原始 postfix 设置，该部分位于check_policy：
smtpd_recipient_restrictions = reject_unknown_recipient_domain, reject_non_fqdn_recipient, reject_unlisted_recipient, permit_mynetworks,check_policy_service inet:127.0.0.1:7777, check_policy_service inet:127.0.0.1:10031, permit_sasl_authenticated, reject_unauth_destination
这是我当前 iredapd.log 的一部分：
2015-06-30 11:12:29 INFO [157.56.122.54] END-OF-MESSAGE, -> [email protected], DUNNO
2015-06-30 11:12:29 INFO [137.56.142.67] END-OF-MESSAGE, ->
[email protected], DUNNO
2015-06-30 11:12:30 INFO [96.231.115.34] END-OF-MESSAGE, -> [email protected], DUNNO
2015-06-30 11:12:30 INFO [72.80.169.254] END-OF-MESSAGE, -> [email protected], DUNNO
2015-06-30 11:12:31 INFO [117.55.334.94] END-OF-MESSAGE, -> [email protected], DUNNO
2015-06-30 11:12:31 INFO [137.65.234.138] END-OF-MESSAGE, -> [email protected], DUNNO
2015-06-30 11:12:31 INFO [117.56.112.67] END-OF-MESSAGE, -> [email protected], DUNNO
我应该检查哪部分/var/log/maillog才能知道消息已成功发送？