The new docs.trellix.com features a modernized UI and AI-powered conversational search. Content is currently available in English, with additional languages launching in early November 2026. We hope you enjoy the updated experience.

Domain identification

Prev Next

Domains are identified in the Domains page by the name of their domain group, a description, and their domain name. You can provide custom descriptions of each domain and domain group provisioned in your Email Security — Cloud organization. The Identification page of each domain shows the domain group that the domain is associated with. If there is no domain group for a domain, the field is left blank.

Users with read-only roles in their Email Security — Cloud organization cannot change the name of a domain group or domain. Users with non-read-only admin roles can change both the name and description of a domain or domain group. If you do not have permission to change a domain's identification, you will only be able to view a domain or domain group's name and description.

To access the Identification page and add or change a domain's description:

  1. In the Domains page, click on the name of a domain.

  2. You are redirected to the domain details page. Next to Identification, click Manage.

    ETP_domainidentification1.png
  3. The Identification page appears with the name of the domain group the domain is associated with and a description box.

  4. Enter a description and click Save.

    ETP_domainidentification2.png

To access the Identification page and add or change a domain group's description:

  1. In the Domains page, click on the name of a domain group.

  2. You are redirected to the domain details page. Next to Identification and Domains, click Manage.

    ETP_domainidentification3.png
  3. The Identification page appears with the domain group's name and a description box.

  4. Change the domain group name and enter a description.

    ETP_domainidentification4.png
  5. Click Save.

To enable or disable email scanning for Native domains:

  1. In the Domains page, click on the name of a domain.

  2. You are redirected to the domain details page. Next to Identification, click Manage.

  3. In the Email Scanning section, select either Enable or Disable.

  4. Click Save.

Note

Email Security - Cloud updates new subscriptions and domains every few hours, thus new domains may take up to a few hours to reflect in Email Security — Cloud and for scanning to begin. Admins can manually update a subscription using the Sync button. This allowsEmail Security — Cloud to receive notifications immediately, but the time taken for the sync to reflect may vary depending on the number of mailboxes. When scanning is enabled for a domain, Email Security — Cloud scans emails from the previous hour. See Push notification settings for more information.