To retain all Microsoft Exchange items in Alex Wilber’s mailbox that contain the word “Falcon” and were created in the year 2021, follow these steps:

Create a Retention Policy:

Sign in to the Microsoft 365 compliance center.

Navigate to Policies and click on Retention.

Create a new retention policy (e.g., “Falcon Retention 2021”).

Specify the retention period (e.g., 2 years from the creation date).

Set the condition to include items containing the word “Falcon.”

Apply the Retention Policy to Alex Wilber’s Mailbox:

Assign the retention policy to Alex Wilber’s mailbox.

Ensure that the policy targets items created in the year 2021.

Validate the Policy:

Test the policy thoroughly to ensure it correctly retains the specified items.

Monitor the mailbox to verify that the retention actions are enforced.