连接 telnet 时出现“556 5.7.5 Invalid RFC missing body”之类的错误

Posted 2023-03-16

【中文标题】连接 telnet 时出现“556 5.7.5 Invalid RFC missing body”之类的错误

【英文标题】：While connecting telnet I got errors like "556 5.7.5 Invalid RFC missing body"

【发布时间】：2021-05-24 15:36:01

【问题描述】：

我尝试使用 SMTP 验证所有邮箱的电子邮件地址，它工作正常，但 Yahoo 电子邮件 ID 除外。。

【参考方案1】：

欢迎来到 Stack Overflow，Jayashree。

您收到的错误消息与您的测试电子邮件没有正文部分有关。正文部分在Content-Transfer-Encoding 之后的 2 个<CRLF><CRLF> 之后立即开始。

它开始于Good morning.，结束于P | 999.555.1234

以下是格式正确的text/plain 电子邮件的完整示例。

To: "Jane Doe" <[e-mail]>
From: "John Doe" <[e-mail]>
Subject: A text/plain email
MIME-Version: 1.0 (Created with SublimeText 3)
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit

Good morning.

This is a message in text/plain format.
It contains text/plain.
It contains no base64 inline images or attachments.
Each line is no more than 76 characters in length.

Please reach out if you have any questions.


Thank you,

John Doe
SENIOR DEVELOPER
XYZ Solutions Inc.
P | 999.555.1234

【讨论】：

如果我们给数据邮件发送给用户。如何在不发送电子邮件的情况下验证用户 ID？