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Postfix禁止转发伪造发件人邮件

发布时间:July 10, 2012 // 分类:Mail // No Comments

Postfix内网用户在转发邮件时可以任意填写发件人邮箱,给管理带来诸多不便,可以使用账号登录匹配发件人邮箱进行限制。
编辑Postfix配置文件:

#https://www.haiyun.me
cat /etc/postfix/main.cf
smtpd_sender_login_maps = hash:/etc/postfix/sasl_sender #用户与邮件账号匹配表
smtpd_sender_restrictions = 
      reject_sender_login_mismatch #拒绝发送邮件与登录用户不匹配的邮件
smtpd_recipient_restrictions =
#     permit_mynetworks,  #去除网络区域认证
      permit_sasl_authenticated #用户认证模式

新建用户与账号匹配表:

cat /etc/postfix/sasl_sender
root@www.haiyun.me       root

生成hash数据库:

postmap /etc/postfix/sasl_sender

伪造发件人发送邮件测试:

sendEmail -v -f test@www.haiyun.me -t mail@www.haiyun.me -s smtp.www.haiyun.me -u "test" -m "测试sendemail" -xu root -xp passwd
Feb 29 11:08:00 centos5 sendEmail[21973]: DEBUG => Connecting to smtp.www.haiyun.me:25
Feb 29 11:08:01 centos5 sendEmail[21973]: DEBUG => My IP address is: 192.168.1.3
Feb 29 11:08:01 centos5 sendEmail[21973]: SUCCESS => Received:     220 mail.www.haiyun.me ESMTP "ONOVPS Mail Server"
Feb 29 11:08:01 centos5 sendEmail[21973]: INFO => Sending:     EHLO centos5.7-x86
Feb 29 11:08:01 centos5 sendEmail[21973]: DEBUG => SMTP-AUTH: Using LOGIN authentication method
Feb 29 11:08:01 centos5 sendEmail[21973]: INFO => Sending:     AUTH LOGIN
Feb 29 11:08:01 centos5 sendEmail[21973]: SUCCESS => Received:     235 2.0.0 Authentication successful
Feb 29 11:08:01 centos5 sendEmail[21973]: DEBUG => User authentication was successful (Method: LOGIN)
Feb 29 11:08:01 centos5 sendEmail[21973]: INFO => Sending:     MAIL FROM:<test@www.haiyun.me>
Feb 29 11:08:01 centos5 sendEmail[21973]: SUCCESS => Received:     250 2.1.0 Ok
Feb 29 11:08:01 centos5 sendEmail[21973]: INFO => Sending:     RCPT TO:<mail@www.haiyun.me>
Feb 29 11:08:01 centos5 sendEmail[21973]: WARNING => The recipient <mail@www.haiyun.me> was rejected by the mail server, error follows:
Feb 29 11:08:01 centos5 sendEmail[21973]: WARNING => Received:     553 5.7.1 <test@www.haiyun.me>: Sender address rejected: not owned by user root
Feb 29 11:08:01 centos5 sendEmail[21973]: ERROR => Exiting. No recipients were accepted for delivery by the mail server.
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  • 硅谷少年: 非常有用,感谢分享
  • spartan2: https://dashboard.hcaptcha.com/welcome_accessib...
  • 海运: 应该能,在购买页面先手工跳过cf机器验证,后续一定时间内不更换ip应该不会再次验证。
  • spartan: 大佬斯巴达开启了CF的机器识别验证,请问插件能自动跳过吗? 另外这个脚本有没有简单使用说明,新...
  • vincent: 膜拜大佬
  • 海运: proxy-header或proxy_protocol
  • liangjw: 如果是 内部调用 或者 中间存在 代理 而上一个代理又在内网 ,那怎么处理来自代理私有IP?
  • chainofhonor: 感谢,用dnsmasq设置自动判断BIOS和UEFI成功了
  • 海运: 不好意思,这个是很多年前的,现在也许已经不适用,我现在也不用多线了。