如何验证一个电子邮件地址的存在？ [英] How to verify if a email address exists?

问题描述

是否有任何可能的方式，以找出是否电子邮件地址，在C＃中的存在？

Is there any possible way to find out if an email address exists in c#?

例如。我有这样[e-mail]或[e-mail]我该怎么做验证？

e.g. I have an email address like [e-mail] or [e-mail] How can I do the validation?

推荐答案

电子邮件地址，一旦很久因特网和SMTP邮件传输协议被发明。这又回到了过去的好时光，当大家都好和友好的，所以命令被列入SMTP协议来验证电子邮件地址 - 在VRFY命令

Once upon a time the Internet and the SMTP mail transfer protocol was invented. It was back in the good old days when everyone were nice and friendly, so a command was included in the SMTP protocol to verify email addresses - the VRFY command.

不过，黑暗临到互联网带来的垃圾邮件，蠕虫和其他恶，所以Internet邮件服务器辩护什么通过禁用VRFY命令良好的系统管理员。

However, darkness came upon the Internet and brought spammers, worms and other evil, so the sysadmins of the Internet mail servers defended what was good by disabling the VRFY command.

所以短期答案是：否

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