What is required for Routing Emails Outbound through Mimecast?

Routing emails outbound through Mimecast necessitates ensuring that the organization's IP address is authorized for sending mail. When setting up MIME routing, it's crucial to inform Mimecast about which IP addresses are permitted to send outbound emails. This step is essential for ensuring that messages sent from the organization can be handled appropriately by Mimecast and that they comply with security and anti-spam measures.

By validating the IP address, Mimecast can accurately verify that the emails are genuinely originating from the organization, preventing unauthorized use of the email system and ensuring that legitimate emails are properly routed and delivered. This practice also helps maintain email integrity and deliverability, ensuring that outbound communications are secure and trusted.

The other considerations, while relevant to email security and configuration, do not directly pertain to the fundamental requirement of routing emails through the Mimecast platform. For instance, while configuring email encryption settings is important for protecting email content, it does not affect the routing process itself. Similarly, using a secure connection is a best practice but does not address the authorization of the sender's IP address. Disabling local email filters might allow certain emails to pass through but does not establish the necessary authorization for sending emails through Mimecast.