發送電子郵件的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」未處理的異常發生在System.dll中附加發送電子郵件我有這樣的錯誤信息：SMTP服務器需要安全連接或客戶端未通過身份驗證。服務器響應是：5.5.1需要身份驗證。

來源

2015-06-23 Islam Gx

檢查，如果您可以登錄到從應用程序上運行的計算機的Gmail帳戶。有時谷歌可以阻止遠程計算機訪問。還檢查是否啓用了2因素身份驗證。 – user1666620

檢查您的Gmail帳戶的安全設置，並啓用不太安全的應用程序 – Sybren

也許[這些]（http://stackoverflow.com/questions/9801224/smtpclient-with-gmail）答案將幫助您 – voytek

您應該刪除這兩條線

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

來源

2015-06-23 18:57:22

這確實是一個問題 – hdkhardik

試試這個代碼

 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);

來源

2015-06-23 18:53:11 hdkhardik

發送電子郵件的SMTP例外

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