如何解决从远程服务器发送邮件时“服务器不支持安全连接”的问题

本文关键字：服务器 不支持 安全 问题 连接 解决 何解决 | 更新日期: 2023-09-27 18:05:45

我收到以下错误，而从我的网页发送邮件。

"服务器不支持安全连接"

请告诉我如何解决这个错误。我的邮件发送代码是。请告诉我有哪些可能的排除方法。

public void sendmail(string emailaddress, string batchid)
{
    try
    {

        string msg1 = string.Empty;
        string mailLink = @"http://tk5sdatweb02:2222/SitePages/Sales%20Desk%20Request%20A%20Service.aspx?MBUP=Yes&BatchID= "+batchid;
        string strSubject = "Sales Desk Internal Bulk Upload";
        string msg2 = string.Empty;

        msg1 = "Test Email for" +batchid;
            msg1 = "<html><head><body>";
            msg2 = "<span style='font-size:14px;font-family:Calibri;'>Hi REDMOND''v-rejinn";
            msg2 = msg2 + @"<br/><br/><span style='font-size:14px;font-family:Calibri;'>A target list has recently been uploaded they will be send to SDAT.<br/>";
            msg2 = msg2 + @"To view and/or validate the accounts, please visit the <a href='" + mailLink + "' style='color:#0000FF;text-decoration:none;'>MBUP Page</a><br />";
            msg2 = msg2 + "If you have any questions or issues, please reach out to <a href='mailto:SDPET@microsoft.com'>SDPET@microsoft.com</a>.<br />";
            msg2 = msg2 + "<br/>&nbsp;Thank you,<br/><b><font style='font-family:Segoe UI;font-size:28px;color:#033570;'>&nbsp;SALES</font>";
            msg2 = msg2 + "<font style='font-family:Segoe UI;font-size:28px;color:#7ac366;'> DESK</font></b><br />";
            msg2 = msg2 + "<font style='font-family:Segoe UI;font-size:10px;color:#3f6692;'>&nbsp;&nbsp;&nbsp;&nbsp;<span style='padding-left:11px;'>Enabling World Class Selling</span></font>";
            msg2 = msg2 + "</span></body></head></html>";
        //SmtpClient smtpClient = new SmtpClient();
        SmtpClient smtpClient = new SmtpClient("tk5sdatsql01", 25);
        //smtpClient.Host = "smtp.gmail.com";
        MailMessage message = new MailMessage();
        //MailAddress fromAddress = new MailAddress("sarath.hits@gmail.com", strSubject);
        MailAddress fromAddress = new MailAddress("sdmail@microsoft.com");
        message.From = fromAddress;
        string strmailid = string.Empty;
        strmailid = emailaddress;
        message.To.Add(strmailid);
        //message.Bcc.Add("sarath.psnr@gmail.com");
        message.Subject = strSubject;
        message.Body = msg2;
        message.IsBodyHtml = true;
        smtpClient.UseDefaultCredentials = false;
        smtpClient.Port = 25;
        //smtpClient.Credentials = new System.Net.NetworkCredential("sarath.hits@gmail.com", "myaccountdata");
        smtpClient.Credentials = CredentialCache.DefaultNetworkCredentials;
        smtpClient.EnableSsl = false;
        smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;
        smtpClient.Send(message);
        Response.Write("success");
    }
    catch (WebException ex)
    {

    }
}

如何解决从远程服务器发送邮件时“服务器不支持安全连接”的问题

我认为PORT NO或凭据似乎是一个问题，请验证PORTNo。

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