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Avi LeibzonFlag for United States of America

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Server 2012 stop users from sending files as attachments on any email or web service

Not sure if this is possible, but have a design team, that needs to be restricted from sending files out via email.
they need web to work, so cant disable that.
need a way to disable attachments for all web based email, ex) gmail, outlook, etc..
Any ideas or thoughts would be appreciated.

Is there gp edit I can implement to prevent attachments.

the users need to have full access to the file, they are cad files so restrictions cause program issues.
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Cliff Galiher
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thanks that is what I was thinking, but will leave question open for now. maybe some one else has a quirky idea.
It's important to note that these new permission features can only be set on shares, folders and files on Windows Server 2012, though the permissions will apply to all users. DAC also requires a Windows Server 2012 domain controller,
https://redmondmag.com/Articles/2014/03/01/Secure-Files-in-Windows-Server-2012-with-AD-RMS.aspx
DAC can be used to restrict the user's access to the file, but my understanding is that the OP wants the user to have access, but *not* be able to email. That's where the catch-22 comes in. DAC can be used to granularly block access, but that would also block local access which is not what the OP wants.  And AD-RMS still has the fundamental drawback that it requires application awareness such as office.  While there is a generic viewer for mobile apps, it also has the *big* caveat that nothing prevents a user from decrypting the file with the generic viewer, saving it, and then resending it unencrypted. The generic file support is extremely limited in this regard.