C# SocketException:未知此类主机-无法发送电子邮件-unity

我得到了这个错误

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SocketException：不知道这样的主机

public void EmailSending() {
    MailMessage mail = new MailMessage();

    mail.From = new MailAddress("xxx@gmail.com");
    mail.To.Add("xxx@gmail.com");
    mail.Subject = "Test Mail";
    mail.Body = "This is for testing SMTP mail from GMAIL";

    SmtpClient smtpServer = new SmtpClient("smtp.gmail.com");
    smtpServer.Port = 587;
    smtpServer.Credentials = new System.Net.NetworkCredential("xxx@gmail.com", "pw") as ICredentialsByHost;
    smtpServer.EnableSsl = true;
    ServicePointManager.ServerCertificateValidationCallback =
        delegate(object s, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
        { return true; };
    smtpServer.Send(mail);
    Debug.Log("success");
}

System.Net.Dns.hostent_to_IPHostEntry（System.String h_name， System.String[]h_别名，System.String[]h_地址列表）

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如果您已从anroid设备发送，则 我想你也会遇到同样的问题，确保你的android版本需要互联网访问许可

转到Android播放器设置，“其他设置”并查找互联网接入。默认为“自动”，将其设置为“需要”。

错误

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SocketException：不知道这样的主机

public void EmailSending() {
    MailMessage mail = new MailMessage();

    mail.From = new MailAddress("xxx@gmail.com");
    mail.To.Add("xxx@gmail.com");
    mail.Subject = "Test Mail";
    mail.Body = "This is for testing SMTP mail from GMAIL";

    SmtpClient smtpServer = new SmtpClient("smtp.gmail.com");
    smtpServer.Port = 587;
    smtpServer.Credentials = new System.Net.NetworkCredential("xxx@gmail.com", "pw") as ICredentialsByHost;
    smtpServer.EnableSsl = true;
    ServicePointManager.ServerCertificateValidationCallback =
        delegate(object s, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
        { return true; };
    smtpServer.Send(mail);
    Debug.Log("success");
}

---

由于代理服务器而发生。我的IP位于代理服务器后面，在分配直接internet访问后，代码工作正常。

SocketException:没有已知的此类主机

public void EmailSending() {
    MailMessage mail = new MailMessage();

    mail.From = new MailAddress("xxx@gmail.com");
    mail.To.Add("xxx@gmail.com");
    mail.Subject = "Test Mail";
    mail.Body = "This is for testing SMTP mail from GMAIL";

    SmtpClient smtpServer = new SmtpClient("smtp.gmail.com");
    smtpServer.Port = 587;
    smtpServer.Credentials = new System.Net.NetworkCredential("xxx@gmail.com", "pw") as ICredentialsByHost;
    smtpServer.EnableSsl = true;
    ServicePointManager.ServerCertificateValidationCallback =
        delegate(object s, X509Certificate certificate, X509Chain chain, SslPolicyErrors sslPolicyErrors)
        { return true; };
    smtpServer.Send(mail);
    Debug.Log("success");
}

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解决方案：Internet无法执行该操作。检查您的互联网

在我的情况下，我的互联网连接非常低。

您从哪里获得的端口设置？您是否尝试了端口

465

我将其更改为465，它仍然显示相同的错误我发现了一些其他问题，您必须在播放器设置下将Api兼容级别设置为“.NET 2.0”，而不是“.NET 2.0子集”。希望其他人也能从中得到帮助。请使用这是关于webgl的我已经检查过了我没有使用webgl我正在使用一个应用程序