System.Net.Mail在发送时超时

时间:2013-07-22 16:51:18

标签: c# asp.net-mvc-4 system.net.mail system.web.mail

我有一些较旧的代码适用于发送电子邮件,但visual studio告诉我代码已过时,我应该将其从Net.Mail更改为Web.Mail。我已经重写了大部分内容,但我有几个问题。

以下是原始的工作代码:

public void Send(string from, string to, string subject, string body, bool isHtml, string[] attachments)
{

    var mailMessage = new MailMessage

    {
        From = from,
        To = to,
        Subject = subject,
        Body = body,
        BodyFormat = isHtml ? MailFormat.Html : MailFormat.Text
    };


    // Add attachments
    if (attachments != null)
    {
        foreach (var t in attachments)
        {
            mailMessage.Attachments.Add(new Attachment(t));
        }
    }
    mailMessage.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", 1);
    mailMessage.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", _accountName);
    mailMessage.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", _password);
    mailMessage.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpserverport", _port.ToString(CultureInfo.InvariantCulture)); 
    mailMessage.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpusessl", true);

    SmtpMail.SmtpServer = _smtp;
    SmtpMail.Send(mailMessage);
}

这是重写的部分(好吧,有点):

public void Send2(string from, string to, string subject, string body, bool isHtml, string[] attachments)
{
var fromObj = new MailAddress(from);
var toObj = new MailAddress(to);


var mailMessage = new System.Net.Mail.MailMessage
                      {
                          From = fromObj,
                          Subject = subject,
                          Body = body,
                          IsBodyHtml = isHtml,
                      };

mailMessage.To.Add(toObj);

if (attachments != null)
{
    foreach(var t in attachments)
    {
        mailMessage.Attachments.Add(new Attachment(t));
    }
}

var smtp = new SmtpClient(_smtp) {Credentials = new NetworkCredential(_accountName, _password), Port = _port, EnableSsl = true};
smtp.Send(mailMessage);
}

如果您想知道,我在代码中分别设置了_port_smtp,分别为465和smtp.gmail.com。

所以它似乎有效,但接着发送到发送部分并吐出其中一个:

System.Net.Mail.SmtpException: The operation has timed out.

我是否缺少某些内容,例如原始代码中的Fields,导致其超时?

谢谢!

感谢DavidH指向正确的方向,端口需要从 465 更改为 587 (或25;我正在使用前者没有问题)。

1 个答案:

答案 0 :(得分:3)

一个小小的谷歌走了很长的路。检查这个答案你的治疗方法 - 你使用了错误的端口:

https://stackoverflow.com/a/11244548/2420979