Explanation:
Always be able to request the User Administrator role: Setting "Allow permanent eligible assignment to Yes" ensures that users can always request the User Administrator role when needed.
Must provide a reason when requesting the User Administrator role: Selecting "Require justification on activation" ensures that users must provide a reason each time they activate the User Administrator role, which adds a layer of accountability and tracking.
Must require MFA when activating the User Administrator role: Setting "Require Azure Multi-Factor Authentication on active assignment to Yes" ensures that users must perform MFA to activate the User Administrator role, enhancing security.

Explanation:

Explanation:

Explanation:
Safe Attachments policy: This policy allows you to specify how to handle email attachments that might contain malware. You can create a custom policy for Mailbox1 and set the action to Do not scan attachments.
This will ensure that incoming email is not filtered for Mailbox1. You can also enable the Redirect attachment option to send a copy of the original attachment to another mailbox for analysis1.
Anti-phishing policy: This policy helps you protect your organization from impersonation and spoofing attacks. You can create a default policy for all other mailboxes in the subscription and enable the following features: Impersonation protection, Spoof intelligence, and Domain authentication. These features will help you detect and block emails that try to impersonate your users, domains, or trusted senders2.