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

[Josh More]

There are some services that do this, mostly as part of spam control.

That said, it's poor security, as for email to be viable, it must also
be forwardable from "legit" email accounts.  Security-aware
organizations use detective technology to scan the contents of the
outgoing email and then blocks it or encrypts it according to what it
detects.

The routing code idea only works if 100% of the Internet is
trustworthy. Basically, discretionary controls are not reliable.

-Josh



On Tue, Jul 24, 2012 at 2:31 AM, Rob Miller <rob at dotcomservices.com> wrote:
> 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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