SMTP服务器要求安全连接或客户端未通过身份验证

SMTP服务器要求安全连接或客户端未通过身份验证。服务器响应为：5.7.0必须首先发出STARTTLS命令。 k12sm3795394wby.16

The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.0 Must issue a STARTTLS command first. k12sm3795394wby.16

说明：当前Web请求的执行过程中发生未处理的异常。请检查堆栈跟踪有关该错误的详细信息以及它起源于code。

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

异常详细信息：System.Net.Mail.SmtpException：SMTP服务器要求安全连接或客户端未通过身份验证。服务器响应为：5.7.0必须首先发出STARTTLS命令。 k12sm3795394wby.16

Exception Details: System.Net.Mail.SmtpException: The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.0 Must issue a STARTTLS command first. k12sm3795394wby.16

源错误

我使用的CreateUserWizard ..它的属性中，我使用设计器（VS2010）设定一个邮件选项。当我用code，它的工作！但与对照它不。我不知道为什么！

I am using createUserWizard.. it has a mailing option in its properties that i set using the designer (VS2010). When I used code it worked!, but with that control it doesnt. I wonder why!!

下面是我的web.config文件：

Here is my web.config file:

<system.net>
    <mailSettings>
        <smtp from="makovetskiyd@yahoo.co.uk">
            <network host="smtp.gmail.com" defaultCredentials="false"
             port="587" userName="**********" password="*****"/>
        </smtp>
    </mailSettings>
</system.net>

但我怀疑该控件使用该设置。

But I doubt the control uses that setting.