如何生成退回电子邮件通知，其中包含一些额外信息
我现在才开始研究这个问题，目前还没有什么成果。所以，我希望你们能帮助我，或者为我指出某种方向。
我所处的情况是，我需要以某种方式能够检测到失败的电子邮件发送和/或退回的电子邮件。然后，我需要能够发送一封描述此故障的通知电子邮件，并在通知电子邮件中包含一些其他特定信息。
目前，我真的不知道该怎么做。我们现在的电子邮件系统涉及一些 C#.NET 托管代码，它们通过 SMTP Exchange 服务器发送电子邮件。因此，我最初的想法是，我也许可以使用电子邮件标头信息来完成此操作，但我不太熟悉所有可用的电子邮件标头。我也完全不反对寻找和使用某种第三方解决方案，但同样，我不熟悉任何此类解决方案或解决方案提供商，因此我也非常愿意接受那里的建议。
I am just now beginning to research this, and so far haven't come up with much. So, I'm hoping you guys can help me, or point me in some sort of direction.
I am in a situation in which I need to somehow be able to detect a failed email delivery and/or bounced-back email. Then, I need to be able to sent out a notification email describing this failure, as well as include some other, specific information in the notification email as well.
At the moment, I really have no idea how to do this. The email system we have now involves some C#.NET managed code, which send the email via an SMTP Exchange server. So, my initial thoughts are that I might be able to use email header information to accomplish this, but I'm not terribly family with all of the available email headers. I am also not at all opposed to finding and using some sort of third-party solution, but again, I'm not familiar with any such solutions or solution providers, and so I am very open to suggestions there too.
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您使用 SMTPClient 类吗？如果是这样，则 SmtpFailedRecipientsException 可以帮助您完成所需的任务。
此处提供的示例和更多信息：
http://msdn .microsoft.com/en-us/library/system.net.mail.smtpfailedrecipientsexception.aspx
Are you using the SMTPClient class? If so, there's a SmtpFailedRecipientsException that would help you accomplish what you need.
Examples and further information given here:
http://msdn.microsoft.com/en-us/library/system.net.mail.smtpfailedrecipientsexception.aspx
不确定您是否要从 IMAP 服务器或 POP3 服务器下载邮件。如果是这种情况，您可能需要查看Ultimate Bounce Inspector 组件。它还允许您处理 EML 文件。
Not sure if you want to download messages from an IMAP server or a POP3 server. If it's the case, you may want to check out the Ultimate Bounce Inspector component. It also let you process EML files.
您可以使用 PostMark 它允许您以编程方式处理退回的电子邮件。
You can use PostMark which allows you to programmatically process bounced emails.