我可以检查电子邮件地址是否存在使用.NET？
问题描述：
我见过的你如何能ping一个收件箱（不发送任何邮件的话），以检查是否存在一些PHP的例子。我想知道是否有人知道，如果这是可能的。NET？如果我要去写一个应用程序做批量支票上的邮件列表，我已经通过我的网站抓获。
Ive seen some php examples of how you can ping an inbox(without sending any mail to it) to check whether it exists. I was wondering if anyone knows if this is possible with .net? If it is Im going to write an app to do a bulk check on list of emails i have captured through my site.
答
SMTP定义了一个命令，这个，但由于合法用途，在世界上几乎每一个电子邮件服务器滥用垃圾邮件发送者完全不知所措数量的配置说谎。
SMTP defines a command for this, but since abuse by spammers totally overwhelmed the number of legitimate uses, virtually every e-mail server in the world is configured to lie.