What cmdlet is used to create a new mail flow rule?

The cmdlet used to create a new mail flow rule is indeed New-TransportRule. This cmdlet is specifically designed to define and implement rules governing the flow of email messages within an organization using Microsoft Exchange. By leveraging New-TransportRule, administrators can establish conditions and actions that dictate how emails are processed based on various parameters, such as sender, recipient, subject, and more.

Using this cmdlet allows for proactive management of email communications, enabling organizations to enforce policies related to security, compliance, and organizational messaging guidelines. It is integral for ensuring that the desired email flow behaviors are established and maintained.

In contrast, the other cmdlets serve different purposes. Set-MailFlowRule is utilized to modify existing mail flow rules rather than create new ones. Get-MailFlowRule is used to retrieve information about existing mail flow rules, allowing administrators to review and manage current configurations. Remove-TransportRule is intended for the deletion of existing transport rules, further emphasizing that it is not suitable for creating new ones. Understanding the specific functionality of each cmdlet ensures effective use of PowerShell in managing email flow within Microsoft Exchange environments.