发送电子邮件的SMTP例外

-1

MailMessage mail = new MailMessage("[email protected]", "[email protected]"); 
SmtpClient client = new SmtpClient("smtp.gmail.com"); 
client.Port = 587; 
client.Credentials = new System.Net.NetworkCredential("[email protected]", "pwd"); 
client.UseDefaultCredentials = false; 
client.DeliveryMethod = SmtpDeliveryMethod.Network; 
client.EnableSsl = true; 
mail.Subject = "this is a test email."; 
mail.Body = "this is my test email body"; 
client.Send(mail);

型“System.Net.Mail.SmtpException”未处理的异常发生在System.dll中附加发送电子邮件我有这样的错误信息：SMTP服务器需要安全连接或客户端未通过身份验证。服务器响应是：5.5.1需要身份验证。

来源

2015-06-23 Islam Gx

检查，如果您可以登录到从应用程序上运行的计算机的Gmail帐户。有时谷歌可以阻止远程计算机访问。还检查是否启用了2因素身份验证。 – user1666620

检查您的Gmail帐户的安全设置，并启用不太安全的应用程序 – Sybren

也许[这些]（http://stackoverflow.com/questions/9801224/smtpclient-with-gmail）答案将帮助您 – voytek

您应该删除这两条线

client.UseDefaultCredentials = false; 
client.DeliveryMethod = SmtpDeliveryMethod.Network;

来源

2015-06-23 18:57:22

这确实是一个问题 – hdkhardik

试试这个代码

 MailMessage mail = new MailMessage(); 
     mail.From = new MailAddress("[email protected]", "name", System.Text.Encoding.UTF8); 
     mail.To.Add("[email protected]"); 
     SmtpClient client = new SmtpClient(); 
     client.Host = "smtp.gmail.com"; 
     client.Port = 587; 
     client.Credentials = new System.Net.NetworkCredential("[email protected]", "password"); 
     client.EnableSsl = true; 
     mail.Subject = "this is a test email."; 
     mail.Body = "this is my test email body"; 
     client.Send(mail);

来源

2015-06-23 18:53:11 hdkhardik

发送电子邮件的SMTP例外

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