作者chang0206 (Eric Chang)
看板Linux
标题[问题] 拒绝空白寄件者的信件
时间Wed Oct 16 22:08:29 2013
最近在处理大陆邮件伺服器的问题
在LOG中发现很多这样的讯息
Oct 16 20:34:08 mg postfix/qmgr[2639]: 9A23D605F1:
from=<>, size=34438,
nrcpt=1 (queue active)
Oct 16 20:34:08 mg postfix/qmgr[2639]: 72C87605EC: removed
Oct 16 20:34:08 mg postfix/smtpd[2704]: disconnect from
unknown[220.176.150.133]
Oct 16 20:34:09 mg postfix/smtp[2711]: connect to
gmail-smtp-in.l.google.com[2a00:1450:4008:c01::1b]:25: Network is unreachable
Oct 16 20:34:49 mg postfix/smtp[2711]: 9A23D605F1: to=<[email protected]>,
relay=gmail-smtp-in.l.google.com[173.194.79.26]:25, delay=41,
delays=0/0/2.6/38, dsn=5.7.1, status=bounced (host
gmail-smtp-in.l.google.com[173.194.79.26] said: 550-5.7.1 [124.74.40.58
1] Our system has detected an unusual rate of 550-5.7.1 unsolicited mail
originating from your IP address. To protect our 550-5.7.1 users from spam,
mail sent from your IP address has been blocked. 550-5.7.1 Please visit
http://www.google.com/mail/help/bulk_mail.html to review 550 5.7.1 our Bulk
Email Senders Guidelines. vs7si56357967pbc.115 - gsmtp (in reply to end of
DATA command))
Oct 16 20:34:49 mg postfix/qmgr[2639]: 9A23D605F1: removed
稍微看了一下网路上的文件，大部分都是说 from=<> 是合乎规范的寄件者
有些退信的讯息都是这样寄送的。
假设先不管这个问题，我就是要挡掉这样的信件，不知道该怎麽做呢？
我先在我的mail gateway的postfix设定了
mynetworks=192.168.40.240/32
inet_interfaces = 192.168.40.244/32,127.0.0.1
40.244是mail gateway的IP
40.240 是我的mail server
然後加入
smtpd_client_restrictions = permit_mynetworks,reject
smtpd_recipient_restrictions = permit_mynetworks,permit_sasl_authenticated,reject_unauth_destination
照理来说，这样的设定会让mail gateway只会为40.240送信才对
但是看mail log里面，还是有很多这样的讯息
不晓得我应该还要怎麽设定，才能避免发送这种信件呢？
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