检查是否存在电子邮件ID [英] to check whether an email id exists or not

问题描述

嗨 我想使用.net
检查给定的电子邮件是否存在 我已经引用了一些代码，但是大多数代码导致使用某些在线工具吗?

Hi I want to check whether a given email exists or not using .net
i have reffered some codes but most of it leading to some online tools is there any other way of achieving it?

推荐答案

请参考:
检查电子邮件地址是否确实存在，或者不使用c# [^ ]
本文演示了检查特定电子邮件是否存在的基本技术；使用RFC 821中的SMTP protocol规范.

Please refer:
Check if email address really exist or not using c#[^]
This article demonstrate basic technique for checking if particular email is exist or not; using SMTP protocol specifications in RFC 821.

您可以先使用自定义验证程序或常规验证程序检查输入的电子邮件ID，以确认其格式是否正确
然后
我们必须检查它是否存在....这可以通过验证是否收到了失败邮件恶魔来实现...为传递失败分配一些标志，并

上述方法的一个缺点是，由于网络问题，您可能会导致传递失败，并且也尝试获取错误代码，并且仅当输入时才找到..您可以确认电子邮件不存在...尝试对其进行编码起来

You May first check the entered email id with the custom validator or regular validator to confirm that whether it is in the correct format or not
then
We have to check whether it is present or not ....This you can do by validating whether a Failure mailer demon is being recieved ...assign some flag for the delivery failure and

one drawback of the above method is you may get a delivery failure due to network issues also try to get the error codes and only if it is input adreess not found ..you can confirm that email is not present ...try to code it up now

看看这些链接


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look these links


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