Delivery Status Notification '550 5.1.1 User unknown (in reply to RCPT TO command)' 是什么意思?
问题:
你正在尝试发送电子邮件,但你收到类似这样的送达状态通知响应:
dsn_550_user_unknown.txt
This is the mail system at host techoverflow.net.
I'm sorry to have to inform you that your message could not
be delivered to one or more recipients. It's attached below.
For further assistance, please send mail to postmaster.
If you do so, please include this problem report. You can
delete your own text from the attached returned message.
The mail system
<john.miller@recipient.com>: host mail.recpient.com[213.216.0.1] said: 550 5.1.1 User
unknown (in reply to RCPT TO command)解决方案
如果响应包含类似这样的一行:
dsn_550_user_unknown_detail.txt
<john.miller@recipient.com>: host mail.recpient.com[213.216.0.1] said: 550 5.1.1 User unknown (in reply to RCPT TO command)这意味着收件人的电子邮件地址(检查行的开头 - 在此例中是 john.miller@recipient.com)不存在。最可能的是
- 你使用了错误或拼写错误的电子邮件地址(检查地址是否有拼写错误)或
- 你发送邮件的人在你尝试发送邮件的公司已不存在
- 域名不匹配 - 例如
company.com而不是company.net- 或copmany.net而不是company.net
注意如果你将电子邮件发送给多个收件人(例如使用抄送),如果你没有收到单独的状态通知或他们也列在该送达状态通知中,其他收件人将已收到邮件。注意一封送达状态通知电子邮件可能有多行 550 5.1.1 User unknown,因此请务必仔细检查送达状态通知。
注意在某些情况下,送达状态通知需要几分钟才能到达你的收件箱,或者它可能最终进入你的垃圾邮件文件夹,因此请务必也检查那里。
提示:如果你没有你尝试发送电子邮件的公司的其他电子邮件地址,请尝试这些地址:
info@company.comsales@company.comwebmaster@company.com
或查看公司的版权声明或隐私页面,这些页面通常包含有效的电子邮件地址。
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