We have set up Contour to send an email when a form is submitted via a Workflow but we are not recieivng it.

We have specified the web.config settings to be

<system.net>
    <mailSettings>
      <smtp>
        <network host="mail.si-sv3956.com" />
      </smtp>
    </mailSettings>
  </system.net>

We have tested email works on the server with the following code that does send an email:

<script runat="server" language="CS">
  protected void Page_Load(object sender, EventArgs e)
  {
     Response.Write("Hello World");
    Email("[email protected]", "[email protected]", "email test", "email test body");
  }

  public void Email(string to, string from, string subject, string body)
  {
    System.Net.Mail.MailMessage message = new System.Net.Mail.MailMessage(from, to, subject, body);
    System.Net.Mail.SmtpClient client = new System.Net.Mail.SmtpClient();
    client.Host = "mail.si-sv3956.com";
    client.Send(message);
  }

Is there something else that needs to be configured for Contour to send emails?