Question

我正在尝试发送asp.net，所以我有一个功能，你可以在这里看到：

public void SendEmail(string subject, string messageBody, string toAddress)
        {
            bool ssl = false;

            Repository.EmailConfRepository emailConf=new EmailConfRepository();
            DomainClass.EmailConfiguration e = emailConf.GetAll().First();
            if (e.EnableSsl == "true") ssl = true;
            MailMessage mail = new MailMessage();
            mail.To.Add(toAddress);
            mail.From = new MailAddress(e.EmailFrom);
            mail.Subject = subject;
            string Body = messageBody;
            mail.Body = Body;
            mail.IsBodyHtml = true;
            SmtpClient smtp = new SmtpClient();
            smtp.UseDefaultCredentials = false;
            smtp.Host = e.SmtpServer;
            smtp.Credentials = new System.Net.NetworkCredential
                (e.Username, e.Password);

            smtp.Port = int.Parse(e.SmtpPort);
            smtp.EnableSsl = ssl;
            smtp.Send(mail);
        }

当我调用此函数时出现此错误：

Bad sequence of commands. The server response was: This mail server requires authentication when attempting to send to a non-local e-mail address. Please check your mail client settings or contact your administrator to verify that the domain or address is defined for this server.

异常详情：

Exception Details: System.Net.Mail.SmtpException: Bad sequence of commands. The server response was: This mail server requires authentication when attempting to send to a non-local e-mail address. Please check your mail client settings or contact your administrator to verify that the domain or address is defined for this server

Answer 1

解决方案是在web.config上写下电子邮件所在的正确参数。

<system.net>
 <mailSettings>
  <smtp from=from@yourdomain.com>
  <network host="localhost" password="" userName=""/>
  </smtp>
 </mailSettings>
</system.net>

现在，如果您的服务器授予localhost发件人权限，则不需要密码和用户名，但如果没有，则需要输入您的电子邮件信息

Answer 2

我收到了相同的错误消息，但我已通过向 SMTP 凭据提供有效的用户名和密码来解决此问题。在这种情况下需要有效的身份验证。

Answer 3

发件人电子邮件地址需要有一个邮箱。您必须从托管中启用它。

错误的命令序列。服务器响应是：此邮件服务器在尝试发送到非本地电子邮件时需要身份验证

3 个答案: