Attachment Management - May 2025

Service Update

Availability	May 20th, 2025
Product(s)	Email Security Cloud Gateway
Who's affected	New & Existing Customers

Overview

Mimecast is pleased to announce that a new option has been added to Attachment Management.

What's changing

• In the Attachment Sets definition, if ‘Allow Specified Content Types (Block or Link All Others)’ is selected then a new check box option is displayed ‘Block Dangerous File Types’.
• Checking this new option will result in the files on the Mimecast dangerous file list to be blocked unless explicitly allowed by the attachment set.
• By default, the new option will be off so that there is no impact on existing attachment sets.

Recommended actions

Nothing needs to be done as a result of these changes.

See Also...

• Policies - Configuring Attachment Management Definitions