Attachment Block.

Question

from where in EOP we can block the file type. What are the options we have.

Answer 1

Hi  @Microsoft Q & A ,

You can block a file type in Exchange Online Protection using the Malware Filter Policy.

See this article for details: Anti-malware policies.

It is worth noting the -FileTypeAction and -FileTypes parameters in the New-MalwareFilterPolicy or Set-MalwareFilterPolicy commands.

The FileTypeAction parameter specifies what's done to messages that contain one or more attachments where the file extension is included in the FileTypes parameter.

The FileTypes parameter specifies the file types that are automatically blocked by the common attachments filter.

To add or remove file types without affecting other file type entries, you can refer to Example 2 and Example 3 in the Set-MalwareFilterPolicy cmdlet.

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