SMTP Gmail超时

不知道为什么会这样。 我搜索的每个地方都告诉我,我做得对。 但每次我尝试发送邮件时,它都会在smtpserver.Send(mail)上发送。发送smtpserver.Send(mail)

 private void emailReport(string email_address,int begDatabaseCount, int endDatabaseCount) { SmtpClient smtpserver = new SmtpClient(); MailMessage mail = new MailMessage(); smtpserver.EnableSsl = true; smtpserver.Port = 465; smtpserver.Host = "smtp.gmail.com"; smtpserver.Credentials = new NetworkCredential("mtaylor@atr.com", "password"); smtpserver.UseDefaultCredentials = false; mail = new MailMessage(); mail.From = new System.Net.Mail.MailAddress("mtaylor@atr.com", "ATR Reports"); mail.To.Add(email_address); mail.Subject = "FNAS Report - " + DateTime.Now; mail.Body += "FNAS Report for " + DateTime.Now + "" + "\r\n \r\n"; mail.Body += "Beginning Database Count - " + begDatabaseCount + "\r\n" + "\r\n"; mail.Body += "End Database Count - " + endDatabaseCount + "\r\n" + "\r\n"; mail.Body += "Total Imported Orders = " + (endDatabaseCount - begDatabaseCount) + "" + "\r\n" + "\r\n"; mail.IsBodyHtml = true; smtpserver.Send(mail); } 

端口465 = 1分钟后超时

端口587 =“SMTP服务器需要安全连接或客户端未经过身份validation。服务器响应为:5.5.1需要身份validation。”

正如@kostyan所说,正确的端口是587,但要进行身份validation,您需要允许从您的Gmail帐户中安全性较低的应用程序进行访问。 试试吧

它对我有用,希望它有帮助..

你确定端口,我的代码我把它作为587,否则看起来很相似,它的工作原理。

这个post帮助了我。 我不确定为什么这个代码有效,而我的代码没有。

通过Gmail在.NET中发送电子邮件

 using System.Net; using System.Net.Mail; var fromAddress = new MailAddress("from@gmail.com", "From Name"); var toAddress = new MailAddress("to@example.com", "To Name"); const string fromPassword = "fromPassword"; const string subject = "Subject"; const string body = "Body"; var smtp = new SmtpClient { Host = "smtp.gmail.com", Port = 587, EnableSsl = true, DeliveryMethod = SmtpDeliveryMethod.Network, UseDefaultCredentials = false, Credentials = new NetworkCredential(fromAddress.Address, fromPassword) }; using (var message = new MailMessage(fromAddress, toAddress) { Subject = subject, Body = body }) { smtp.Send(message); } 

我发现当我尝试使用google smtp欺骗发件人地址时(例如,使用FromAddress作为我的gmail帐户名称之外的其他内容)我收到了身份validation错误消息或只是超时。