Follow the following process:
  1. Register with Trend Micro Customer License Portal.

    See Registering with Trend Micro Customer License Portal.

  2. Add a domain you want to manage through Hosted Email Security.
    Note:

    If your account has no domain records, Trend Micro redirects you to the Add Domain screen once you log on to the administrator console.

    For details about adding domains, see Adding a Domain.

  3. Configure the domain as instructed.

    See Configuring a Domain.

    To further configure your product, see the Administrator's Guide.