Aspx发送邮件错误

Question

Web.config中有什么问题吗？当我发送邮件时，我收到此错误。我认为错误是在Web.config文件中。你可以看到我不知道ASPX。我只想编辑代码并发送邮件到另一个地址

感谢您的帮助

   <?xml version="1.0"?>
    <!--
      For more information on how to configure your ASP.NET application, please visit
      http://go.microsoft.com/fwlink/?LinkId=169433
      -->
    <configuration>
        <appSettings>
            <!--# Eposta gönderme ayarları-->
            <add key="epostaFromAddress" value="noreply@hkl.com"/>
            <add key="epostaReply" value="noreply@hkl.com"/>
            <add key="epostaFromName" value="hkl Info"/>
            <add key="epostaServer" value="mail.hkl.com"/>
            <add key="epostaSSL" value="0"/>
            <add key="epostaPort" value="26"/>
            <add key="epostaUser" value="noreply@hkl.com"/>
            <add key="epostaPass" value="Gesa123456"/>
            <add key="epostaTo" value="info@hkl.com"/>
        </appSettings>
        <connectionStrings/>
        <system.web>
        <customErrors mode="Off" />
            <compilation debug="true" targetFramework="4.0">
                <assemblies>
                    <add assembly="System.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B03F5F7F11D50A3A"/>
                    <add assembly="System.Web.Extensions.Design, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/>
                    <add assembly="System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/>
          </assemblies></compilation>
        </system.web>
    </configuration>