使用CDO通过代理发送电子邮件

本文关键字：电子邮件 代理 CDO 使用 | 更新日期: 2023-09-27 18:23:59

我想从C#winform应用程序发送电子邮件，我的互联网连接使用代理。

这就是我到目前为止所做的

     WebProxy proxy = WebProxy.GetDefaultProxy();
        Console.WriteLine(proxy.Address);
        if (proxy.Address!=null)
        {
            try
            {
                MailMessage oMsg = new MailMessage();
                // TODO: Replace with sender e-mail address.
                oMsg.From = fromGmailAddress;
                // TODO: Replace with recipient e-mail address.
                oMsg.To = toAddress;
                oMsg.Subject = "Send Using Web Mail";
                // SEND IN HTML FORMAT (comment this line to send plain text).
                oMsg.BodyFormat = MailFormat.Html;
                // HTML Body (remove HTML tags for plain text).
                oMsg.Body = "<HTML><BODY><B>Hello World!</B></BODY></HTML>";
                oMsg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpserverport", 465);
                oMsg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpserver", "smtp.gmail.com");
                oMsg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusing", 2);
                oMsg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/urlproxyserver", proxy.Address.Host);
                oMsg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/proxyserverport", proxy.Address.Port);
                oMsg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpusessl", true);
                oMsg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", "1");
                oMsg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", gmailUsername);
                oMsg.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword", gmailPassword);
                SmtpMail.SmtpServer.Insert( 0,"smtp.gmail.com");
                SmtpMail.Send(oMsg);
                oMsg = null;
            }
            catch (Exception e)
            {
                Console.WriteLine("{0} Exception caught.", e);
            }

它引发异常，传输无法连接到服务器。我已经尝试了465587和25的端口的Gmail smtp服务器。什么都不管用。

我一直在网上读到代理服务器可能无法发送电子邮件的可能性。如果我读错或理解错了，请纠正我？因为这个代理允许我在使用浏览器时登录gmail帐户。

任何帮助都将不胜感激。

问候

使用CDO通过代理发送电子邮件

//使用下面的函数，它将在代理之后工作，即使是

using System.Net.Mail;
public int SendMailUsingGMAIL(string fromAddress, string toAddress, string tocc, string mailsubject, string msgContent, string strAttachment, bool isBodyHTML)
{
    int retvar = 0;
    try
    {
        MailMessage mailMessage = new MailMessage(new MailAddress(fromAddress)
                                            , new MailAddress(toAddress));
        mailMessage.Subject = mailsubject;
        mailMessage.IsBodyHtml = isBodyHTML;
        mailMessage.Body = msgContent;
        if (tocc != "")
        {
            mailMessage.CC.Add(tocc);
        }
        System.Net.NetworkCredential networkCredentials = new
        System.Net.NetworkCredential("smtpUserName", "smtpPassword");//key="smtpUserName" value="urid@gmail.com";key="smtpPassword" value="your password"
        SmtpClient smtpClient = new SmtpClient();
        smtpClient.EnableSsl = true;
        smtpClient.UseDefaultCredentials = false;
        smtpClient.Credentials = networkCredentials;
        smtpClient.Host = "smtp.gmail.com";
        smtpClient.Port = 587;
        smtpClient.Send(mailMessage);
    }
    catch (Exception ex)
    {
        retvar = -1;
    }

    return retvar;
}
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