c# - Asp 联系页面在本地工作但不在服务器上工作

Question

我有一个 asp 网站和一个在网上找到的 asp 联系表。它在本地机器上完美运行。

我将其添加到我的服务器以进行实时测试，但没有成功。我得到了显示错误的显示消息，它是这样说的:

System.Security.SecurityException: Request for the permission of type 'System.Net.Mail.SmtpPermission, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed. at System.Security.CodeAccessSecurityEngine.Check(Object demand, StackCrawlMark& stackMark, Boolean isPermSet) at System.Security.CodeAccessSecurityEngine.Check(CodeAccessPermission cap, StackCrawlMark& stackMark) at System.Security.CodeAccessPermission.Demand() at System.Net.Mail.SmtpClient.Initialize() at System.Net.Mail.SmtpClient..ctor(String host, Int32 port) at contact.btnSubmit_Click(Object sender, EventArgs e) in g:\pleskvhosts\myweburl\httpdocs\contact.aspx.cs:line 33 The action that failed was: Demand The type of the first permission that failed was: System.Net.Mail.SmtpPermission The Zone of the assembly that failed was: MyComputer

谁知道这是什么意思？

我的 contact.aspx.cs 代码是

protected void btnSubmit_Click(object sender, EventArgs e)
{
    try
    {
        MailMessage mailMsg = new MailMessage();

        mailMsg.From = new MailAddress(TheirEmail.Text);

        mailMsg.To.Add("myemailaddress@gmail.com");

        mailMsg.IsBodyHtml = true;

        mailMsg.Subject = "Contact Question!";

        mailMsg.Body = "Contact Details" + "<b>Name:</b>" + TheirName.Text + " <br/> <b>Email - address :</b>" + TheirEmail.Text + "<br/> <b>Comments :</b>" + Comments.Text;

        SmtpClient smtp = new SmtpClient("smtp.gmail.com", 587);

        mailMsg.Priority = MailPriority.Normal;

        smtp.Credentials = new System.Net.NetworkCredential("myemailaddress@gmail.com", "mypassword");

        smtp.Timeout = 25000;

        smtp.EnableSsl = true;

        smtp.Send(mailMsg);

        TheirEmail.Text = "";
        TheirName.Text = "";
        Comments.Text = "";


        DisplayMessage.Text = "Thank you. Your contact details and feed back has been submitted.";
        DisplayMessage.Visible = true;
    }

    catch (Exception ex)
    {
        DisplayMessage.Text = ex.ToString();
        DisplayMessage.Visible = true;
    }

Answer 1

确保您的 Web.Config 文件的 trust level 设置为 完整:

<configuration>
  <system.web>
    .....
    <trust level="Full" originUrl=""/>
  </system.web>
</configuration>

例如，如果您使用的是 GoDaddy，则必须在 System.Net.Mail.SmtpClient 变量中设置以下内容(例如 * smtp *):

SmtpClient smtp = new SmtpClient("relay-hosting.secureserver.net", 25);
smtp.EnableSsl = false; // check if your ISP supports SSL

You will also need to follow this page here to properly configure Email on GoDaddy.

在某些情况下，如果您无法实现完全信任，则具有较低的安全级别将不允许您指定 SMTP 端口。您的 ISP 指定端口 80，但有时如果 80 不起作用，您可以使用默认端口 端口 25。