To restrict a particular domain from creating tickets on your Freshservice account, you can follow these steps:

  1. Go to your Freshservice portal and click on the Admin tab.
  2. Under Channels > Other Channels, click on Support Portal.
  3. In the Support Portal Settings page, scroll down to the Email Domain Restriction section.
  4. Select the Users from specified domains radio button.
  5. Enter the domain name you want to allow for ticket creation.
  6. Click Save.

Restricting a specific domain from creating tickets.

Alternatively, you can configure a workflow automator to check for the domain of the requester email address and choose to delete the tickets which are from the particular domain.