[Cialug] OT - maybe - out-going e-mail address blacklist ???

[Nathan C. Smith]

A lot of the tools available to companies to manage information loss look for and block specific information such as Social Security numbers and credit card numbers etc.  In my admittedly limited experience, these are challenging to use for anything other than the most basic cases.

-Nate


-----Original Message-----
From: cialug-bounces at cialug.org [mailto:cialug-bounces at cialug.org] On Behalf Of Rob Miller
Sent: Tuesday, July 24, 2012 2:31 AM
To: Central Iowa Linux Users Group
Subject: [Cialug] OT - maybe - out-going e-mail address blacklist ???

Every once-in-a-while I have a curious idea that I'm not sure to which I can find the answer.  I do know that someone on this list will know the answer.

Is there a corporate e-mail system like Exchange or some other part of a network like the firewall that has a feature that would block an out-going e-mail message being sent to a specific address? I'm thinking this might be described as an out-going blacklist or a reverse blacklist.  I'm thinking that this might be of interest to info security managers and paranoid corporate types so that employees would be blocked from sending corporate secrets immediately and directly to an address within a competitor's network or to a media outlet.  Maybe a government organization would want to prevent an employee from sending messages to jassaunge at wikidrips.org or using an anonymous remailing service like who remembers "anon.penet.fi" ???

An even cooler concept would be some type of routing code that could be added to a message as it was leaving its home network that would prevent anyone from forwarding the message to specific addresses.  I guess that would solve the problem of a message being sent to an anonymous remailer.

TIA for any replies, discussion, etc.

Rob Miller
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