如何确认电子邮件来源 [英] how to confirm email source

问题描述

我从smtp服务器发送电子邮件，例如，将从设置为 [e-mail] 。收件人将认为电子邮件来自 anydomain 。如何确认电子邮件来源？

I send an email from my smtp server, for example, setting From to [e-mail]. The recipient will think that email comes from anydomain. How to confirm the email source?

推荐答案

有几种处理电子邮件伪造的方法：

There are several approaches to dealing with email forgery:

• 使用 PGP 或 SSL签名证书


• 使用 SPF


• 检查已收到标题（虽然这不可靠）


• 回复发件人，询问他们是否实际发送。如果你知道发件人，可以亲自或通过电话问他们。

• Use PGP or SSL signed certificates
• Use SPF
• check the Received headers (although this isn't reliable)
• reply back to the sender and ask if they actually sent it. If you know the sender, maybe ask them in person or over the phone.

要实现的主要是，From：address没有任何形式的保证信息的发起人。

The main thing to realise is that the From: address isn't any form of guarantee about the originator of a message.

编辑：好的，我现在明白，你只是试图标记邮件的某种方式，以便你可以识别哪个服务器生成它（以非安全的方式）。以下是使用.NET的MailMessage的方式：

okay I now understand that you're just trying to tag the mail message somehow so that you can recognise which server generated it (in a non-secure way). Here's how using .NET's MailMessage:

System.Net.Mail.MailMessage msg = new System.Net.Mail.MailMessage();
msg.Headers.Add("X-Is-Development", "true");

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