SMTP 服务器要求安全连接或客户端未通过身份验证。 服务器响应为: 5.5.1 Authentication Required. Learn m

Question

public class SMTPManager { public SMTPManager() { } public static void SendEmail(string FROM, string FromDisplayName, string TO, string BODY, string SUBJECT, bool bIsHtml) { MailMessage m = new MailMessage(); m.From = new MailAddress(FROM, FromDisplayName); m.To.Add(TO); m.Subject = SUBJECT; m.Body = BODY; m.BodyEncoding = System.Text.Encoding.UTF8; m.IsBodyHtml = bIsHtml; //m.ReplyTo = new MailAddress(FROM); //smtp.126.com不可用，所有使用smtp.gmail.com SmtpClient smtp = new SmtpClient("smtp.gmail.com", 587); smtp.Credentials = new NetworkCredential("zfj123589", "123zxcvb"); smtp.EnableSsl = true; smtp.Send(m);   } }