方法验证mailkit

Question

How to run Verify the existence of a mailbox address.?

http://www.mimekit.net/docs/html/M_MailKit_Net_Smtp_SmtpClient_Verify.htm

using (var client = new SmtpClient())
    {
        
        client.Connect("smtp.mail.ru", 465, true);

        client.Authenticate(name, pass);

        var d = client.Verify(email);

       
    }

Error MailKit.Net.Smtp.SmtpCommandException: "unrecognized command"

Answer 1

Most SMTP servers do not support the VRFY command anymore. Your server doesn't support it which is why you are getting an error.

Answer 2

Possible a duplicate. You can read this question , it's in PHP but all the concepts are the same for your situation.

As jstedfast said, that command isn't supported anymore and to sum up your reading: There is not a reliable way to verify that anymore because of spams.