主题: sina邮箱发送邮件收到退信原因

对方使用新浪邮箱发送给xxx@xx.com地址时收到退信,不知道是什么原因,请告知,谢谢!
我是用的是iredmail-0.4.0,最近同事总是遇到这种问题,遇到次数较多,有时对方重发就能收到了。
多谢大家了!

以下是退信内容:

主题: 系统退信

尊敬的用户,
我们很遗憾的通知您,您发的邮件中有一个或多个接收人没有投递成功。
退回的邮件在附件中,请查看附件了解详情。
被退回邮件信息:
主题:s
收件人:xxx@xx.com
退信原因:5.x.1 - Maximum number of delivery attempts exceeded. [Default] 450-'4.7.1 <xxx@xx.com>: Recipient address rejected: Policy Rejection- Please try later.'
退信原因查询:http://help.sina.com.cn/i/90/152_2.html
Reporting-MTA: dns; mail228-171.sinamail.sina.com.cn
Final-Recipient: rfc822;xxx@xx.comAction: failed
Status: 5.0.0 (permanent failure)
Remote-MTA: dns; [202.85.*.*]
Diagnostic-Code: smtp; 5.x.1 - Maximum number of delivery attempts exceeded. [Default] 450-'4.7.1 <xxx@xx.com>: Recipient address rejected: Policy Rejection- Please try later.' (delivery attempts: 1)

回复: sina邮箱发送邮件收到退信原因

似乎新浪邮箱无法正确识别灰名单返回的 450 错误代码,没有多次重新投递引起的。

回复: sina邮箱发送邮件收到退信原因

Mar  6 10:29:37 mail postfix/smtp[3347]: EB7BD2E0AEB: to=<349298542@qq.com>, relay=mx3.qq.com[113.108.16.62]:25, delay=2.1, delays=0.01/0.07/0.23/1.8, dsn=5.0.0, status=bounced (host mx3.qq.com[113.108.16.62] said: 550 Mail content denied. http://service.mail.qq.com/cgi-bin/help … no=1000726 (in reply to end of DATA command))

发送域内邮件没问题,发送QQ等域外邮件有报错