Windows Hosting (Plesk) ヘルプ

Send email using System.Net.Mail in Windows Hosting

To send mail using System.Net.Mail, you need to configure your SMTP service in your application's web.config file using these values for mailSettings:

<system.net>
  <mailSettings>
    <smtp from="your email address">
      <network host="relay-hosting.secureserver.net" port="25" />
    </smtp>
  </mailSettings>
</system.net>