I'm looking to create a black box solution that an IT administrator for a organization could easily install. They could pop it into the server rack and direct all incoming and outgoing email through it.
It would do some analysis of these emails (similar to anti-virus software) and then send the emails on their merry way. To be more specific, I want to create a digital finger print of the email and its attachments which would be stored on the machine and also send to an off-site server.
First off, in a general sense; Is this a reasonable way to make this work? Do you see any pit falls either technically or politically for a IT department to install this if requested by management?
To follow on that; What kind of open source or off-the-shelf solutions could be used as a base for this system? The analysis and finger print software we have already.
We are in the early stages of designing this solution so I open to ideas.