Email configuration

[athavichith]

We have configured two dedicated mailboxes in ServiceNow to handle inbound email actions:
IT Support 
This mailbox was configured first and is restricted to only accept emails from domains explicitly defined in the Inbound Email Actions.
If no specific inbound action is triggered, a catch-all inbound action is executed. This action sends a notification back to the sender, directing them to submit a ticket through the IT Service Portal.
HR Support 
This mailbox was implemented later and is configured to accept emails from all domains, including external senders such as retirees and former employees.
We enabled the email property that allows emails from any domain.
Objective:
We want to maintain domain restrictions for IT (only allow emails from specified domains) while allowing all domains for HR. The IT mailbox should continue using the catch-all inbound action to notify users directing them to submit a ticket through the IT Service Portal.
Is this possible? The complaint is IT Support doesn't want any tickets generated from email. But because we enabled the property for HR, IT Support is advertently getting tickets when email is received on their inbox. 

[Shubham_Jain]

@athavichith  See the below plan works for you: 

For IT: Create a high-priority inbound action that runs first. This action will have a condition that checks if the email is sent to the IT mailbox AND is from an external domain. The script for this action will simply stop processing the email, preventing ticket creation. The existing IT catch-all action can remain to send the "use the portal" notification for internal emails that don't trigger specific actions.

For HR: Create a separate inbound action that checks if the email is sent to the HR mailbox. Set its priority lower than the IT action so it runs second. This action will process all HR emails and create HR cases as intended.