OpenDMARC RFC5322需求错误:不完全是一个日期字段

Question

我已经为我的业务设置了一个电子邮件服务器，只要通过雷鸟访问电子邮件地址，一切都会正常工作。我有一个拥有Outlook许可证的员工，他们以前就有过这样的许可证，并且更喜欢使用它。当试图通过Outlook将帐户连接为POP3时，我会收到以下日志消息：

Aug 14 04:04:00 ikana dovecot: pop3(dylan@micro-analysts.com)<240303>: Disconnected: Logged out top=0/0, retr=0/0, del=0/1, size=963
Aug 14 04:04:00 ikana postfix/submission/smtpd[240304]: connect from 
Aug 14 04:04:00 ikana postfix/submission/smtpd[240304]: Anonymous TLS connection established from : TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)
Aug 14 04:04:00 ikana postfix/submission/smtpd[240304]: ADB8717A1CB: client=, sasl_method=PLAIN, sasl_username=dylan@micro-analysts.com
Aug 14 04:04:00 ikana postfix/cleanup[240307]: ADB8717A1CB: message-id=<>
Aug 14 04:04:00 ikana opendmarc[229281]: ADB8717A1CB: RFC5322 requirement error: not exactly one Date field
Aug 14 04:04:00 ikana postfix/cleanup[240307]: ADB8717A1CB: milter-reject: END-OF-MESSAGE from : 5.7.1 Command rejected; from= to= proto=ESMTP helo=<{hostname redacted}>
Aug 14 04:04:00 ikana postfix/submission/smtpd[240304]: disconnect from  ehlo=2 starttls=1 auth=1 mail=1 rcpt=1 data=0/1 commands=6/7

服务器是UbuntuServer20.04映像。我看到milter是拒绝连接的东西，但我不确定这会是什么规则。我目前有一个简单的安装垃圾邮件刺客没有变化的规则或分数。

我对垃圾邮件-milter的配置位于/etc/default/spamass-milter中：

# spamass-milt startup defaults

# OPTIONS are passed directly to spamass-milter.
# man spamass-milter for details

# Non-standard configuration notes:
# See README.Debian if you use the -x option with sendmail
# You should not pass the -d option in OPTIONS; use SOCKET for that.

# Default, use the spamass-milter user as the default user, ignore
# messages from localhost
# The domain after the -e option is the default domain to use if the user is logging
# in/sending mail without a full email address. Otherwise, the domain used by the
# client will be passed to spam assassin.
OPTIONS="-e maaonline.net -u spamass-milter -i 127.0.0.1 -R 'Blocked for spam'"

# Reject emails with spamassassin scores > 15.
OPTIONS="${OPTIONS} -r 10"

# Do not modify Subject:, Content-Type: or body.
#OPTIONS="${OPTIONS} -m"

# Scan attachments up to 5MB
OPTIONS="${OPTIONS} -- --max-size=5242880"

######################################
# If /usr/sbin/postfix is executable, the following are set by
# default. You can override them by uncommenting and changing them
# here.
######################################
# SOCKET="/var/spool/postfix/spamass/spamass.sock"
# SOCKETOWNER="postfix:postfix"
# SOCKETMODE="0660"
######################################

位于/etc/defaut/spamassassin中的垃圾邮件刺客配置是：

# /etc/default/spamassassin
# Duncan Findlay

# WARNING: please read README.spamd before using.
# There may be security risks.

# Prior to version 3.4.2-1, spamd could be enabled by setting
# ENABLED=1 in this file. This is no longer supported. Instead, please
# use the update-rc.d command, invoked for example as "update-rc.d
# spamassassin enable", to enable the spamd service.

# Options
# See man spamd for possible options. The -d option is automatically added.

# SpamAssassin uses a preforking model, so be careful! You need to
# make sure --max-children is not set to anything higher than 5,
# unless you know what you're doing.

OPTIONS="--create-prefs --max-children 5 --helper-home-dir --nouser-config --virtual-config-dir=/var/vmail/%d/%l/spamassassin --username=vmail"

# Pid file
# Where should spamd write its PID to file? If you use the -u or
# --username option above, this needs to be writable by that user.
# Otherwise, the init script will not be able to shut spamd down.
PIDFILE="/var/run/spamd.pid"

# Set nice level of spamd
#NICE="--nicelevel 15"

# Cronjob
# Set to anything but 0 to enable the cron job to automatically update
# spamassassin's rules on a nightly basis
CRON=1

我真的不知道Outlook在这一点上发送了什么，也不知道为什么它会有一个问题，而雷鸟能够毫无困难地登录到帐户。

Answer 1

由于迈克尔·汉普顿的评论，我已经解决了这个问题:这与我最初认为的垃圾邮件刺客无关。我忘记了OpenDMARC本身就是一个milter，并且认为milter拒绝这封电子邮件是我刚刚设置的-垃圾邮件刺客。结果是，当添加帐户或更改现有帐户上的设置时，Outlook会向添加/修改的地址发送默认测试电子邮件，以测试其发送和接收电子邮件的能力。另外，这个测试电子邮件does没有一个 Date头，而且我的opendmarc配置将RequiredHeaders设置为true，导致它拒绝测试邮件，因为它违反了RFC5322。

Outlook没有在电子邮件上使用当前日期来遵循规范，而只是不包括测试邮件中的日期。一旦在Outlook上设置了帐户，它就会包含日期设置，因此，如果您的用户数量有限，需要使用Outlook进行安装，我想您可以禁用OpenDMARC的设置，让他们全部安装，然后打开它，就像所有新电子邮件中的日期一样。