如何使用System.Net.Mail设置退回邮件地址？
我正在尝试实现 可变信封返回路径 (VERP) 方法来管理电子邮件地址（即，当我发送的电子邮件被退回时，我希望将其发送到特定的电子邮件地址，以便我可以更新我的数据库，以避免将来向该电子邮件地址发送电子邮件）。
根据这篇文章，可以指定退回电子邮件发送到的电子邮件地址。在 .Net 中如何做到这一点？
例如，假设我（[email protected]）想要发送电子邮件至您（[电子邮件受保护]）。如果 [email protected] 不再存在，我希望您的服务器发送将电子邮件退回至 [电子邮件;受保护]）。这样，当我收到这封退回的电子邮件时，我就知道[电子邮件受保护]不再是有效的电子邮件地址，我可以相应地更新我的数据库。
在此示例中，退回邮件地址为：[电子邮件受保护]
如何使用 System.Net.Mail 指定它？
I'm trying to implement the Variable envelope return path (VERP) method to manage email addresses (ie when an email I send bounces back I want it to be sent to a specific email address so that I can update my database to avoid sending emails to that email address in the future).
According to this article it is possible to specify the email address a bounce email is sent to. How do you do this in .Net?
For example say I ([email protected]) want to send an email to you ([email protected]). If [email protected] doesn't exist anymore I want yourserver to send the bounce email to [email protected]). This way when I receive this bounced email I know that [email protected] is not a valid email address anymore and I can update my database accordingly.
In this example, the bounce address would be: [email protected]
How do you specify it using System.Net.Mail?
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最重要的是，您无法在 .NET 中执行此操作。您只能设置发件人地址，System.Net.Mail 也将使用该地址作为信封发件人。
要执行此类操作，您需要使用第 3 方 SMTP 对象，如我编写的对象：
http://www.aspnetemail.com aspnetemail.com
在 aspNetEmail 中，您可以执行以下操作：
aspNetEmail 将在 SMTP 会话期间使用 MAIL FROM 命令中的 ReversePath 值。我可以轻松地将此属性称为“ReturnPath”或“EnvelopeFrom”。回想起来，EnvelopeFrom 会是一个更好的名字。
The bottom line is that you cannot do this in .NET. You can only set the FROM address, which System.Net.Mail will also use as the Envelope-From.
To do something like this, you would need to use a 3rd party SMTP object like the one I wrote:
http://www.aspnetemail.com
In aspNetEmail, you can do something like:
aspNetEmail will use the ReversePath value in the MAIL FROM command during the SMTP Session. I could have easily of called this property "ReturnPath" or "EnvelopeFrom". In retrospect, EnvelopeFrom would have been a better name.